ASTROSAT CZTI

Data Quality Report

Orbit 57611

Creation date: 2026-05-22T13:14:54.842788
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_57611cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57611cztM0_level2_quad_clean.evt
Size (bytes)440,084,16089,472,960
Size419.7 MB 85.3 MB
Events in quadrant A2,843,242593,297
Events in quadrant B3,862,013632,458
Events in quadrant C3,950,713556,533
Events in quadrant D5,140,324483,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129461
B0158441
C0160621
D0196241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355430.676633%
B63562684.216488%
C63562033.193833%
D635665710.336690%

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 7810 6630 6 6 0.08% 0.09%
B 7811 6631 112 112 1.43% 1.69%
C 7811 6631 136 136 1.74% 2.05%
D 7811 6631 573 573 7.34% 8.64%

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 31403 173.3 718 700 177.2
A 3 245 17164 92.93 718 700 177.2
A 3 128 17118 92.67 718 700 177.2
B 5 185 625443 4187.39 707 680 149.2
B 5 172 112070 746.58 707 680 149.2
B 0 63 90554 602.37 707 680 149.2
C 15 224 863092 4540.25 701 694 189.9
C 9 38 185927 975.19 701 694 189.9
C 14 254 71461 372.57 701 694 189.9
D 15 94 813655 4316.56 671 640 188.3
D 15 142 608163 3225.54 671 640 188.3
D 2 249 568688 3015.95 671 640 188.3

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