ASTROSAT CZTI

Data Quality Report

Orbit 20200313_C05_012T04_9000003564_level2

Creation date: 2025-12-09T23:49:35.663726
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/AS1C05_012T04_9000003564cztM0_level2.fits modeM0/AS1C05_012T04_9000003564cztM0_level2_quad_clean.evt
Size (bytes)794,508,480984,242,880
Size757.7 MB 938.6 MB
Events in quadrant A4,992,9566,490,092
Events in quadrant B4,712,8166,459,687
Events in quadrant C4,765,7806,128,131
Events in quadrant D3,999,7085,144,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016640
B016660
C016640
D016640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01676820
B01708370
C01687230
D02811940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A815127610.933605%
B8150311611.424487%
C8149612931.586581%
D81438825210.132862%

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 98403 81575 0 0 0.00% 0.00%
B 98403 81571 0 0 0.00% 0.00%
C 98403 81560 0 0 0.00% 0.00%
D 98403 81497 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 4648 10.83 1300 1229 315.6
A 7 110 3978 8.71 1300 1229 315.6
A 9 19 3670 7.74 1300 1229 315.6
B 2 9 3803 10.83 1247 1195 240.8
B 2 8 3184 8.26 1247 1195 240.8
B 3 80 3088 7.86 1247 1195 240.8
C 12 241 3348 6.78 1262 1185 319.2
C 9 209 3238 6.43 1262 1185 319.2
C 3 126 3172 6.22 1262 1185 319.2
D 15 46 2892 6.16 1142 1044 299.9
D 6 231 2808 5.88 1142 1044 299.9
D 10 189 2806 5.87 1142 1044 299.9

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