ASTROSAT CZTI

Data Quality Report

Orbit 58122

Creation date: 2026-06-25T22:23:34.891743
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_042T02_9000006586_58122cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58122cztM0_level2_quad_clean.evt
Size (bytes)777,651,84073,710,720
Size741.6 MB 70.3 MB
Events in quadrant A2,984,443617,956
Events in quadrant B8,282,015487,751
Events in quadrant C2,899,716588,363
Events in quadrant D14,135,486102,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132541
B0290024
C0133531
D0461621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239991.586793%
B6239183129.347652%
C6239721.154031%
D6239523883.955762%

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 7199 6240 14 14 0.19% 0.22%
B 7199 6239 1415 1415 19.66% 22.68%
C 7199 6239 15 15 0.21% 0.24%
D 7199 6240 4821 4821 66.97% 77.26%

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 91696 521.54 705 686 174.5
A 11 3 66985 379.93 705 686 174.5
A 3 14 47518 268.37 705 686 174.5
B 10 128 3080088 23898.98 595 574 128.9
B 5 172 2243950 17410.02 595 574 128.9
B 5 185 305436 2365.92 595 574 128.9
C 1 16 130734 697.49 676 669 186.5
C 12 252 56925 301.68 676 669 186.5
C 1 60 39527 208.38 676 669 186.5
D 12 110 11639837 92924.15 430 410 125.3
D 8 160 585184 4668.58 430 410 125.3
D 8 240 108764 865.05 430 410 125.3

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