ASTROSAT CZTI

Data Quality Report

Orbit 20230523_A12_035T01_9000005660_level2

Creation date: 2023-05-25T11:01:54.852190
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_035T01_9000005660cztM0_level2.fits modeM0/AS1A12_035T01_9000005660cztM0_level2_quad_clean.evt
Size (bytes)817,096,320889,263,360
Size779.2 MB 848.1 MB
Events in quadrant A4,885,4005,415,746
Events in quadrant B4,692,2345,446,308
Events in quadrant C4,724,3885,105,718
Events in quadrant D4,081,6664,605,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01975650
B01956520
C02025810
D02580670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018940
B018940
C018940
D018940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03290
B03290
C03290
D03290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A927831830.197234%
B927834290.462369%
C9278321342.299990%
D9278348765.255273%

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 123606 92781 0 0 0.00% 0.00%
B 123606 92774 0 0 0.00% 0.00%
C 123605 92578 0 0 0.00% 0.00%
D 123606 92680 0 0 0.00% 0.00%

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 9 19 4072 8.92 1273 1187 323.4
A 7 110 3986 8.65 1273 1187 323.4
A 0 29 3781 8.02 1273 1187 323.4
B 2 9 4013 11.65 1240 1178 243.3
B 3 80 3455 9.36 1240 1178 243.3
B 2 8 3347 8.91 1240 1178 243.3
C 1 81 4035 9.01 1248 1166 318.3
C 1 80 3737 8.08 1248 1166 318.3
C 1 65 3354 6.87 1248 1166 318.3
D 4 160 3010 6.27 1167 1064 310.4
D 10 189 2964 6.12 1167 1064 310.4
D 7 3 2961 6.11 1167 1064 310.4

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