ASTROSAT CZTI

Data Quality Report

Orbit 58855

Creation date: 2026-08-14T11:34:33.905983
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_106T01_9000006596_58855cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58855cztM0_level2_quad_clean.evt
Size (bytes)1,069,485,120153,152,640
Size1019.9 MB 146.1 MB
Events in quadrant A18,175,032347,868
Events in quadrant B6,571,1851,256,029
Events in quadrant C6,709,9811,118,649
Events in quadrant D7,176,1411,064,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0626832
B0279523
C0289162
D0299402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12293873471.048564%
B122933002.440413%
C122932802.277719%
D122931781.447979%

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 12782 12292 3048 3048 23.85% 24.80%
B 12783 12296 118 118 0.92% 0.96%
C 12783 12296 231 231 1.81% 1.88%
D 12783 12295 123 123 0.96% 1.00%

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 3 95 14497715 109925.29 526 512 131.9
A 3 14 886725 6719.73 526 512 131.9
A 15 233 544271 4123.06 526 512 131.9
B 2 249 290741 1003.56 1357 1306 288.4
B 4 236 198308 683.07 1357 1306 288.4
B 5 185 184767 636.11 1357 1306 288.4
C 14 254 424274 1170.5 1330 1318 361.3
C 12 252 360750 994.7 1330 1318 361.3
C 15 164 285378 786.12 1330 1318 361.3
D 11 129 520442 1358.45 1334 1270 382.2
D 12 110 466590 1217.54 1334 1270 382.2
D 15 238 301038 784.36 1334 1270 382.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct