ASTROSAT CZTI

Data Quality Report

Orbit 54867

Creation date: 2025-11-20T11:18:29.663179
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/AS1A14_039T06_9000006526_54867cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54867cztM0_level2_quad_clean.evt
Size (bytes)699,814,080160,571,520
Size667.4 MB 153.1 MB
Events in quadrant A5,255,7991,059,102
Events in quadrant B5,543,0411,120,840
Events in quadrant C6,657,550988,182
Events in quadrant D7,586,299925,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238952
B0243642
C0275744
D0302302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111112582.322023%
B111112832.547025%
C111113863.474035%
D111115534.977050%

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 12986 11111 59 59 0.45% 0.53%
B 12986 11111 48 48 0.37% 0.43%
C 12986 11111 216 216 1.66% 1.94%
D 12986 11111 408 408 3.14% 3.67%

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 8 343453 1130.14 1233 1202 302.8
A 3 14 60316 195.2 1233 1202 302.8
A 4 3 23396 73.29 1233 1202 302.8
B 5 185 290620 1118.14 1208 1164 258.9
B 10 247 190012 729.5 1208 1164 258.9
B 12 6 121650 465.43 1208 1164 258.9
C 12 252 622856 1912.86 1188 1178 325.0
C 14 254 541033 1661.1 1188 1178 325.0
C 4 5 443025 1359.53 1188 1178 325.0
D 11 176 1002411 2964.59 1189 1137 337.7
D 9 19 524019 1548.16 1189 1137 337.7
D 11 129 302440 892.1 1189 1137 337.7

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