ASTROSAT CZTI

Data Quality Report

Orbit 55533

Creation date: 2026-01-03T08:59:10.398587
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_099T01_9000006536_55533cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55533cztM0_level2_quad_clean.evt
Size (bytes)418,049,28090,838,080
Size398.7 MB 86.6 MB
Events in quadrant A3,119,431606,002
Events in quadrant B2,911,374648,584
Events in quadrant C3,001,460570,909
Events in quadrant D5,964,440496,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135681
B0130851
C0134781
D0219711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61441071.741536%
B61441502.441406%
C6144881.432292%
D614478812.825521%

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 7259 6145 3 3 0.04% 0.05%
B 7259 6144 25 25 0.34% 0.41%
C 7259 6144 19 19 0.26% 0.31%
D 7259 6144 700 700 9.64% 11.39%

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 3 14 254344 1542.17 669 651 164.5
A 4 205 147761 894.27 669 651 164.5
A 7 243 43950 263.21 669 651 164.5
B 5 236 61827 437.2 655 634 140.0
B 10 247 61211 432.8 655 634 140.0
B 1 238 55598 392.7 655 634 140.0
C 15 178 158351 891.79 643 635 176.9
C 9 38 146420 824.33 643 635 176.9
C 13 3 94335 529.82 643 635 176.9
D 8 160 1162405 6642.46 623 595 174.9
D 11 129 1089911 6227.99 623 595 174.9
D 15 125 603227 3445.45 623 595 174.9

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