ASTROSAT CZTI

Data Quality Report

Orbit 58953

Creation date: 2026-08-21T09:53:38.524078
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_004T07_9000006598_58953cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58953cztM0_level2_quad_clean.evt
Size (bytes)1,998,092,160231,073,920
Size1.9 GB 220.4 MB
Events in quadrant A26,421,7101,107,373
Events in quadrant B15,531,3291,699,715
Events in quadrant C10,136,9051,696,160
Events in quadrant D20,445,4381,218,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0911272
B0587442
C0430862
D0734652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18489725139.217913%
B18489257513.927200%
C184904102.217415%
D18490431223.320714%

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 19493 18488 6452 6452 33.10% 34.90%
B 19493 18488 1793 1793 9.20% 9.70%
C 19494 18489 213 213 1.09% 1.15%
D 19494 18489 3862 3862 19.81% 20.89%

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 14 238 17545394 43552.38 1637 1593 402.8
A 10 251 1742401 4321.55 1637 1593 402.8
A 15 233 584127 1446.14 1637 1593 402.8
B 4 171 3106274 7446.4 1955 1881 416.9
B 2 249 2237956 5363.59 1955 1881 416.9
B 6 255 592408 1416.48 1955 1881 416.9
C 6 223 587602 1063.06 2021 1998 550.9
C 12 252 493390 892.04 2021 1998 550.9
C 3 233 419126 757.22 2021 1998 550.9
D 12 110 9270760 17534.21 1876 1791 528.6
D 11 129 1839133 3475.72 1876 1791 528.6
D 2 249 440372 829.67 1876 1791 528.6

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