ASTROSAT CZTI

Data Quality Report

Orbit 58547

Creation date: 2026-07-24T15:19:44.793154
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_044T04_9000006592_58547cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58547cztM0_level2_quad_clean.evt
Size (bytes)590,688,000129,640,320
Size563.3 MB 123.6 MB
Events in quadrant A5,262,567829,569
Events in quadrant B4,762,015920,508
Events in quadrant C5,333,989808,514
Events in quadrant D5,813,377746,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215560
B0203280
C0218220
D0236320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89382632.942493%
B89381171.309018%
C89381882.103379%
D89392672.986911%

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 8938 8938 227 227 2.54% 2.54%
B 8938 8938 15 15 0.17% 0.17%
C 8938 8938 149 149 1.67% 1.67%
D 8939 8939 244 244 2.73% 2.73%

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 17 806696 3215.97 1001 971 250.5
A 3 14 419908 1672.14 1001 971 250.5
A 10 16 50461 197.53 1001 971 250.5
B 0 171 273469 1267.81 1003 966 214.9
B 0 186 124000 572.41 1003 966 214.9
B 8 234 75960 348.91 1003 966 214.9
C 12 252 833773 3108.82 977 971 267.9
C 15 208 364199 1355.92 977 971 267.9
C 4 5 57361 210.5 977 971 267.9
D 3 12 460086 1685.5 962 917 272.4
D 2 249 414731 1519.01 962 917 272.4
D 8 240 331332 1212.87 962 917 272.4

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