ASTROSAT CZTI

Data Quality Report

Orbit 20190510_A05_115T02_9000002906_level2

Creation date: 2019-05-13T14:33:58.074136
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_115T02_9000002906cztM0_level2_bc.evt modeM0/AS1A05_115T02_9000002906cztM0_level2_quad_clean.evt
Size (bytes)2,263,587,840838,664,640
Size2.1 GB 799.8 MB
Events in quadrant A14,505,3905,370,240
Events in quadrant B14,665,6195,421,460
Events in quadrant C15,404,5005,098,076
Events in quadrant D19,495,2265,004,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01370470
B01389290
C01424370
D01547040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013400
B013400
C013400
D013400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657638031.221051%
B6576310231.555586%
C6576312301.870353%
D6576312961.970713%

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 76398 65761 1 1 0.00% 0.00%
B 76398 65756 21 21 0.03% 0.03%
C 76398 65762 14 14 0.02% 0.02%
D 76398 65760 123 123 0.16% 0.19%

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 15 191 773164 1003.94 3528 3459 766.7
A 9 143 111849 141.37 3528 3459 766.7
A 13 254 87411 109.5 3528 3459 766.7
B 3 64 315556 471.61 3545 3461 661.8
B 7 220 191898 284.75 3545 3461 661.8
B 0 198 176960 262.18 3545 3461 661.8
C 3 233 1518500 1939.15 3352 3339 781.4
C 7 247 750974 956.85 3352 3339 781.4
C 9 221 126666 157.84 3352 3339 781.4
D 1 52 1547393 1974.13 3423 3305 782.2
D 7 238 1392499 1776.1 3423 3305 782.2
D 12 233 1217613 1552.5 3423 3305 782.2

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