ASTROSAT CZTI

Data Quality Report

Orbit 57379

Creation date: 2026-05-06T22:37:59.821804
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_102T01_9000006572_57379cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57379cztM0_level2_quad_clean.evt
Size (bytes)422,876,16098,265,600
Size403.3 MB 93.7 MB
Events in quadrant A2,964,421661,535
Events in quadrant B3,247,520696,221
Events in quadrant C5,754,954578,118
Events in quadrant D3,183,587588,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134571
B0141931
C0216291
D0140581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465550.850735%
B64661201.855861%
C64666359.820600%
D6466530.819672%

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 7645 6466 4 4 0.05% 0.06%
B 7646 6467 31 31 0.41% 0.48%
C 7645 6466 553 553 7.23% 8.55%
D 7645 6466 34 34 0.44% 0.53%

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 80575 445.96 725 706 179.1
A 13 248 57043 314.57 725 706 179.1
A 13 254 9694 50.19 725 706 179.1
B 5 185 130635 855.26 708 681 151.9
B 7 252 76413 498.41 708 681 151.9
B 4 201 48757 316.4 708 681 151.9
C 15 224 2691018 14827.38 659 653 181.4
C 12 249 125596 688.6 659 653 181.4
C 14 254 115400 632.4 659 653 181.4
D 8 240 98708 503.12 691 659 194.9
D 3 12 91368 465.46 691 659 194.9
D 2 249 73930 375.98 691 659 194.9

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