ASTROSAT CZTI

Data Quality Report

Orbit 22882

Creation date: 2024-06-27T18:47:00.090358
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/AS1A07_049T01_9000003380_22882cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22882cztM0_level2_quad_clean.evt
Size (bytes)131,757,1206,672,960
Size125.7 MB 6.4 MB
Events in quadrant A933,13219,223
Events in quadrant B942,85120,324
Events in quadrant C948,06318,242
Events in quadrant D1,044,94615,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038141
B038331
C038471
D042231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1740130.747126%
B1740120.689655%
C1740321.839080%
D1740261.494253%

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 1740 1740 5 5 0.29% 0.29%
B 1740 1740 0 0 0.00% 0.00%
C 1740 1740 1 1 0.06% 0.06%
D 1740 1740 15 15 0.86% 0.86%

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 23 22528 458.97 234 230 48.6
A 2 79 4435 86.55 234 230 48.6
A 0 226 3264 62.45 234 230 48.6
B 3 64 6528 136.03 238 232 46.3
B 4 173 6243 129.88 238 232 46.3
B 12 111 5326 110.06 238 232 46.3
C 14 238 37391 674.77 229 231 55.1
C 2 16 15703 280.95 229 231 55.1
C 13 61 1620 25.22 229 231 55.1
D 7 238 94521 1677.96 225 218 56.2
D 1 52 54805 971.28 225 218 56.2
D 13 153 25147 443.57 225 218 56.2

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