ASTROSAT CZTI

Data Quality Report

Orbit 20160127_G02_025T01_9000000298_level2

Creation date: 2025-10-26T01:23:22.243463
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_025T01_9000000298cztM0_level2.fits modeM0/AS1G02_025T01_9000000298cztM0_level2_quad_clean.evt
Size (bytes)842,135,040963,573,120
Size803.1 MB 918.9 MB
Events in quadrant A4,886,2305,889,655
Events in quadrant B4,855,6825,973,644
Events in quadrant C4,796,2725,503,358
Events in quadrant D4,073,1284,925,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020120
B020120
C020120
D020120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139992431392808139990164045870
B1139992431392808139990164045870
C1139992431392808139990164045870
D1139992431392808139990164045870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04388570
B04429870
C04201610
D04410350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1005555950.591716%
B1005574980.495242%
C1005593530.351038%
D10055923832.369753%

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 113884 100557 0 0 0.00% 0.00%
B 113884 100557 0 0 0.00% 0.00%
C 113884 100561 0 0 0.00% 0.00%
D 113884 100508 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 4527 11.28 1267 1180 296.6
A 7 110 4420 10.92 1267 1180 296.6
A 0 30 3484 7.77 1267 1180 296.6
B 2 9 3740 10.92 1283 1215 231.3
B 5 128 3263 8.85 1283 1215 231.3
B 10 225 3202 8.59 1283 1215 231.3
C 12 241 3284 6.86 1265 1165 309.0
C 2 127 3143 6.4 1265 1165 309.0
C 9 242 3089 6.23 1265 1165 309.0
D 1 19 2993 7.07 1165 1065 272.8
D 6 231 2939 6.87 1165 1065 272.8
D 11 82 2830 6.47 1165 1065 272.8

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