ASTROSAT CZTI

Data Quality Report

Orbit 55634

Creation date: 2026-01-09T22:42:00.199877
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_021T06_9000006538_55634cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55634cztM0_level2_quad_clean.evt
Size (bytes)408,464,64094,965,120
Size389.5 MB 90.6 MB
Events in quadrant A4,265,154606,681
Events in quadrant B2,829,182673,924
Events in quadrant C2,785,807597,487
Events in quadrant D4,732,987542,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174752
B0134842
C0136212
D0188862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65163265.003069%
B6516811.243094%
C6516380.583180%
D65162914.465930%

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 7631 6516 251 251 3.29% 3.85%
B 7631 6516 11 11 0.14% 0.17%
C 7631 6517 9 9 0.12% 0.14%
D 7631 6516 292 292 3.83% 4.48%

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 12 115 995882 5969.25 672 654 166.7
A 15 32 300135 1796.25 672 654 166.7
A 0 8 158225 945.09 672 654 166.7
B 5 185 65200 443.37 676 651 145.6
B 7 252 34759 234.28 676 651 145.6
B 10 247 27154 182.04 676 651 145.6
C 9 38 85424 469.15 657 649 180.7
C 6 223 48930 267.19 657 649 180.7
C 12 250 25426 137.11 657 649 180.7
D 11 129 1224123 6631.03 646 617 184.5
D 8 245 640818 3469.7 646 617 184.5
D 15 234 104945 565.43 646 617 184.5

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