ASTROSAT CZTI

Data Quality Report

Orbit 56824

Creation date: 2026-03-30T14:34:34.315336
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_083T03_9000006562_56824cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56824cztM0_level2_quad_clean.evt
Size (bytes)509,014,08086,598,720
Size485.4 MB 82.6 MB
Events in quadrant A3,688,433590,533
Events in quadrant B3,420,845636,826
Events in quadrant C3,660,789557,420
Events in quadrant D7,589,891404,591

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
A0156991
B0144221
C0153501
D0268801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62011582.547976%
B62011772.854378%
C62012664.289631%
D6201164826.576359%

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 7216 6202 45 45 0.62% 0.73%
B 7216 6202 56 56 0.78% 0.90%
C 7216 6202 165 165 2.29% 2.66%
D 7216 6202 1552 1552 21.51% 25.02%

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 828837 5010.32 671 655 165.3
A 10 251 230520 1390.63 671 655 165.3
A 7 64 16040 93.08 671 655 165.3
B 8 128 178746 1250.44 661 637 142.4
B 5 185 178112 1245.98 661 637 142.4
B 4 206 177792 1243.74 661 637 142.4
C 15 230 629736 3569.68 651 644 176.2
C 1 16 119542 674.67 651 644 176.2
C 6 13 113027 637.7 651 644 176.2
D 15 142 3528947 21230.95 595 570 166.2
D 2 249 1504489 9049.38 595 570 166.2
D 2 120 81934 489.58 595 570 166.2

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