ASTROSAT CZTI

Data Quality Report

Orbit 26733

Creation date: 2024-06-27T19:32:14.114915
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_223T01_9000003850_26733cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26733cztM0_level2_quad_clean.evt
Size (bytes)1,102,619,520150,416,640
Size1.0 GB 143.4 MB
Events in quadrant A5,517,367993,289
Events in quadrant B12,139,124941,948
Events in quadrant C5,823,196961,004
Events in quadrant D9,175,888901,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232
B0231
C0235
D0233

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231640
B0432480
C0240530
D0346230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10927580.530795%
B10895237021.753098%
C109271681.537476%
D1088110049.227093%

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 13635 10984 12 12 0.09% 0.11%
B 13636 10957 1775 1775 13.02% 16.20%
C 13636 10996 32 32 0.23% 0.29%
D 13635 10935 748 748 5.49% 6.84%

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 11 29 180058 655.6 1380 1356 272.6
A 0 13 17240 58.27 1380 1356 272.6
A 13 254 16142 54.25 1380 1356 272.6
B 0 189 7114215 30339.88 1260 1232 234.4
B 3 112 55808 232.79 1260 1232 234.4
B 12 111 27964 114.02 1260 1232 234.4
C 4 254 343715 1130.64 1305 1313 302.8
C 14 238 211419 693.79 1305 1313 302.8
C 3 233 93483 304.35 1305 1313 302.8
D 1 52 3949608 12022.42 1255 1229 328.4
D 7 80 289734 878.47 1255 1229 328.4
D 2 250 81018 242.95 1255 1229 328.4

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