ASTROSAT CZTI

Data Quality Report

Orbit 54122

Creation date: 2025-09-30T11:16:26.004286
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_012T01_9000006512_54122cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54122cztM0_level2_quad_clean.evt
Size (bytes)406,684,80091,379,520
Size387.8 MB 87.1 MB
Events in quadrant A3,047,746600,449
Events in quadrant B4,329,270629,456
Events in quadrant C2,644,110576,581
Events in quadrant D4,546,546523,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136011
B0171541
C0128624
D0177151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6257791.262586%
B62572503.995525%
C6255240.383693%
D62572644.219274%

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 7266 6257 35 35 0.48% 0.56%
B 7267 6258 160 160 2.20% 2.56%
C 7267 6257 5 5 0.07% 0.08%
D 7267 6258 227 227 3.12% 3.63%

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 15 174 258656 1572.46 661 645 164.1
A 3 14 80527 486.85 661 645 164.1
A 2 143 42397 254.46 661 645 164.1
B 15 20 429600 3166.56 642 621 135.5
B 5 236 223174 1642.8 642 621 135.5
B 5 248 147538 1084.49 642 621 135.5
C 12 252 57348 320.07 639 630 177.2
C 14 254 40693 226.08 639 630 177.2
C 9 38 16720 90.8 639 630 177.2
D 7 70 474959 2623.4 632 603 180.8
D 2 165 456636 2522.06 632 603 180.8
D 3 12 246923 1362.26 632 603 180.8

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