ASTROSAT CZTI

Data Quality Report

Orbit 20190101_A05_118T02_9000002612_level2

Creation date: 2019-01-05T10:47:31.805676
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_118T02_9000002612cztM0_level2.evt modeM0/AS1A05_118T02_9000002612cztM0_level2_quad_clean.evt
Size (bytes)11,392,632,0001,899,406,080
Size10.6 GB 1.8 GB
Events in quadrant A72,940,78512,082,368
Events in quadrant B74,725,39812,264,185
Events in quadrant C77,336,47411,730,313
Events in quadrant D109,865,73611,125,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030720
B030720
C030720
D030720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02490
B02490
C02490
D02490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03142370
B03182680
C03227530
D04291290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15077215040.997533%
B15077218521.228345%
C15077222601.498952%
D150772120017.959701%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 175639 150778 8 8 0.00% 0.01%
B 175639 150773 16 16 0.01% 0.01%
C 175639 150766 0 0 0.00% 0.00%
D 175639 150768 4047 4047 2.30% 2.68%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 237 1928961 517.8 18450 18083 3690.4
A 0 226 161961 38.99 18450 18083 3690.4
A 3 137 136546 32.1 18450 18083 3690.4
B 0 230 982437 279.44 18354 17921 3451.6
B 7 220 426998 118.52 18354 17921 3451.6
B 12 111 418888 116.17 18354 17921 3451.6
C 3 233 5751273 1405.27 17601 17699 4080.1
C 14 238 2720977 662.56 17601 17699 4080.1
C 5 218 245008 55.71 17601 17699 4080.1
D 1 52 38096966 9039.14 17303 16798 4212.8
D 13 189 3991575 943.5 17303 16798 4212.8
D 7 238 766857 178.04 17303 16798 4212.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter