ASTROSAT CZTI

Data Quality Report

Orbit 20200909_A09_038T08_9000003856_level2

Creation date: 2025-12-14T21:37:54.910345
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/AS1A09_038T08_9000003856cztM0_level2.fits modeM0/AS1A09_038T08_9000003856cztM0_level2_quad_clean.evt
Size (bytes)53,101,44055,817,280
Size50.6 MB 53.2 MB
Events in quadrant A336,764369,135
Events in quadrant B305,024330,530
Events in quadrant C329,686351,316
Events in quadrant D224,130227,325

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132610
B0204750
C0122430
D0331840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5890671.137521%
B589071612.156197%
C5890681.154499%
D5890253943.106961%

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 6210 5890 0 0 0.00% 0.00%
B 6210 5888 0 0 0.00% 0.00%
C 6210 5890 0 0 0.00% 0.00%
D 6210 5840 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 29 273 8.08 88 83 23.5
A 0 30 260 7.53 88 83 23.5
A 9 19 251 7.14 88 83 23.5
B 2 9 228 8.42 80 77 17.9
B 14 254 211 7.47 80 77 17.9
B 2 8 205 7.14 80 77 17.9
C 2 191 229 6.27 87 82 23.5
C 9 209 229 6.27 87 82 23.5
C 12 241 226 6.14 87 82 23.5
D 6 38 172 5.95 64 58 19.1
D 3 31 171 5.9 64 58 19.1
D 7 3 168 5.75 64 58 19.1

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