ASTROSAT CZTI

Data Quality Report

Orbit 33851

Creation date: 2024-06-27T20:53:22.654239
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/AS1A11_065T11_9000004830_33851cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33851cztM0_level2_quad_clean.evt
Size (bytes)997,954,560132,068,160
Size951.7 MB 126.0 MB
Events in quadrant A5,554,265815,100
Events in quadrant B7,174,621810,814
Events in quadrant C6,061,897814,706
Events in quadrant D10,662,558769,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236704
B0291423
C0251573
D0397423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11412160.140203%
B114126095.336488%
C11412420.368034%
D1141210198.929197%

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 15530 11415 0 0 0.00% 0.00%
B 15530 11415 381 381 2.45% 3.34%
C 15530 11415 30 30 0.19% 0.26%
D 15530 11415 774 774 4.98% 6.78%

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 15 169 329916 1222.05 1340 1314 268.9
A 13 6 36637 131.36 1340 1314 268.9
A 13 254 18701 64.66 1340 1314 268.9
B 5 172 1751073 7029.11 1300 1263 248.9
B 5 255 108864 432.24 1300 1263 248.9
B 15 85 102520 406.76 1300 1263 248.9
C 15 214 490816 1652.13 1296 1305 296.3
C 0 207 157857 528.37 1296 1305 296.3
C 0 10 153220 512.72 1296 1305 296.3
D 8 195 2001264 6556.16 1261 1228 305.1
D 12 235 1418793 4646.81 1261 1228 305.1
D 2 250 1214091 3975.79 1261 1228 305.1

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