ASTROSAT CZTI

Data Quality Report

Orbit 58823

Creation date: 2026-08-12T03:11:44.699763
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_58823cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58823cztM0_level2_quad_clean.evt
Size (bytes)667,065,600102,908,160
Size636.2 MB 98.1 MB
Events in quadrant A3,789,423705,071
Events in quadrant B5,295,886736,824
Events in quadrant C4,543,447642,388
Events in quadrant D10,491,827517,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165570
B0209510
C0187710
D0364170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7387670.906999%
B73882813.803465%
C73883975.373579%
D7388182024.634543%

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 7387 7387 50 50 0.68% 0.68%
B 7388 7388 174 174 2.36% 2.36%
C 7388 7388 356 356 4.82% 4.82%
D 7388 7388 1709 1709 23.13% 23.13%

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 10 251 353093 1770.32 802 783 199.0
A 15 233 139747 698.28 802 783 199.0
A 3 245 36211 178.02 802 783 199.0
B 7 0 956089 5701.48 786 759 167.6
B 4 171 510724 3043.51 786 759 167.6
B 5 172 192003 1141.36 786 759 167.6
C 15 164 825361 3906.3 767 761 211.1
C 13 3 279643 1321.12 767 761 211.1
C 14 254 270986 1280.11 767 761 211.1
D 12 110 7136290 35020.14 720 686 203.8
D 2 120 169151 826.79 720 686 203.8
D 5 32 88056 428.79 720 686 203.8

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