ASTROSAT CZTI

Data Quality Report

Orbit 20200219_T03_180T01_9000003524_level2

Creation date: 2025-12-09T12:25:54.576117
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/AS1T03_180T01_9000003524cztM0_level2.fits modeM0/AS1T03_180T01_9000003524cztM0_level2_quad_clean.evt
Size (bytes)779,820,480699,266,880
Size743.7 MB 666.9 MB
Events in quadrant A4,853,5544,137,363
Events in quadrant B4,637,9884,165,325
Events in quadrant C4,735,6503,981,687
Events in quadrant D4,104,5743,607,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01615960
B01700680
C01623470
D02033520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015700
B015700
C015700
D015700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A770669501.232710%
B7706616442.133236%
C7706614311.856850%
D7706619972.591285%

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 89166 77058 0 0 0.00% 0.00%
B 89166 77049 0 0 0.00% 0.00%
C 89166 77054 0 0 0.00% 0.00%
D 89166 77013 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 4629 11.21 1263 1190 306.7
A 7 110 3820 8.57 1263 1190 306.7
A 9 19 3630 7.95 1263 1190 306.7
B 2 9 3632 10.25 1229 1176 239.7
B 2 8 3050 7.82 1229 1176 239.7
B 5 128 3040 7.78 1229 1176 239.7
C 1 80 3669 7.83 1250 1170 319.2
C 1 81 3648 7.76 1250 1170 319.2
C 9 209 3252 6.52 1250 1170 319.2
D 6 67 2899 5.88 1171 1069 311.2
D 7 3 2879 5.82 1171 1069 311.2
D 3 14 2875 5.8 1171 1069 311.2

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