ASTROSAT CZTI

Data Quality Report

Orbit 57571

Creation date: 2026-05-19T20:58:12.312895
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_070T08_9000006576_57571cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57571cztM0_level2_quad_clean.evt
Size (bytes)478,105,92092,448,000
Size456.0 MB 88.2 MB
Events in quadrant A2,805,576622,259
Events in quadrant B3,355,477661,472
Events in quadrant C6,603,717507,833
Events in quadrant D4,421,676549,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134312
B0146184
C0243422
D0177422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65721322.008521%
B65721922.921485%
C6572125119.035301%
D65723385.143031%

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 6842 6574 0 0 0.00% 0.00%
B 6842 6573 25 25 0.37% 0.38%
C 6842 6574 858 858 12.54% 13.05%
D 6842 6573 209 209 3.05% 3.18%

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 3 14 29273 164.98 709 690 173.2
A 10 251 12632 68.93 709 690 173.2
A 3 137 8594 45.62 709 690 173.2
B 10 247 156810 1054.83 696 671 148.0
B 8 128 117198 787.23 696 671 148.0
B 5 185 89033 596.95 696 671 148.0
C 15 224 1417842 8290.26 629 622 170.9
C 14 254 1213945 7097.53 629 622 170.9
C 12 254 864443 5053.06 629 622 170.9
D 8 160 637565 3310.46 677 646 192.4
D 7 253 220361 1141.99 677 646 192.4
D 2 249 211974 1098.4 677 646 192.4

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