ASTROSAT CZTI

Data Quality Report

Orbit 20160103_G02_034T01_9000000240_level2

Creation date: 2025-10-25T16:32:33.378373
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/AS1G02_034T01_9000000240cztM0_level2.fits modeM0/AS1G02_034T01_9000000240cztM0_level2_quad_clean.evt
Size (bytes)848,756,160991,319,040
Size809.4 MB 945.4 MB
Events in quadrant A4,866,0285,994,407
Events in quadrant B4,837,3226,026,218
Events in quadrant C4,806,6465,745,033
Events in quadrant D4,155,7865,220,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04424560
B04770910
C04390360
D04196540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020880
B020880
C020880
D020880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1026775610.546374%
B1026747650.745077%
C1026795590.544415%
D10267412051.173617%

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 120731 102668 0 0 0.00% 0.00%
B 120731 102668 0 0 0.00% 0.00%
C 120731 102655 0 0 0.00% 0.00%
D 120730 102648 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 0 29 4560 11.52 1258 1171 294.2
A 7 110 4275 10.55 1258 1171 294.2
A 14 188 3696 8.58 1258 1171 294.2
B 2 9 3888 11.51 1273 1204 233.2
B 5 128 3167 8.42 1273 1204 233.2
B 14 254 3143 8.31 1273 1204 233.2
C 12 241 3306 6.94 1270 1174 307.2
C 2 191 3147 6.42 1270 1174 307.2
C 9 242 3049 6.1 1270 1174 307.2
D 11 82 2984 6.73 1186 1084 282.3
D 10 189 2962 6.65 1186 1084 282.3
D 6 44 2936 6.56 1186 1084 282.3

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