ASTROSAT CZTI

Data Quality Report

Orbit 58846

Creation date: 2026-08-13T16:40:01.435672
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_58846cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58846cztM0_level2_quad_clean.evt
Size (bytes)561,447,36094,383,360
Size535.4 MB 90.0 MB
Events in quadrant A8,601,376483,310
Events in quadrant B3,731,869716,631
Events in quadrant C3,700,079629,781
Events in quadrant D4,255,657584,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299412
B0151232
C0151102
D0168083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361210733.123723%
B63622123.332285%
C63621902.986482%
D63612864.496148%

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 7522 6361 1545 1545 20.54% 24.29%
B 7523 6363 66 66 0.88% 1.04%
C 7523 6364 93 93 1.24% 1.46%
D 7522 6362 192 192 2.55% 3.02%

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 15 233 2438359 15108.39 649 632 161.3
A 3 95 2132413 13212.22 649 632 161.3
A 14 238 853655 5286.81 649 632 161.3
B 15 32 166424 1044.44 748 723 158.7
B 0 171 114307 715.94 748 723 158.7
B 4 201 111345 697.27 748 723 158.7
C 7 87 277393 1394.69 724 719 198.4
C 6 223 229484 1153.18 724 719 198.4
C 12 252 149937 752.19 724 719 198.4
D 8 160 821884 4012.47 722 689 204.7
D 12 110 237306 1156.14 722 689 204.7
D 7 222 115777 562.34 722 689 204.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct