ASTROSAT CZTI

Data Quality Report

Orbit 58570

Creation date: 2026-07-26T01:19:25.605143
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_044T04_9000006592_58570cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58570cztM0_level2_quad_clean.evt
Size (bytes)492,655,68098,487,360
Size469.8 MB 93.9 MB
Events in quadrant A4,883,054644,101
Events in quadrant B3,503,208700,676
Events in quadrant C4,796,640621,693
Events in quadrant D4,554,679567,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192732
B0148362
C0186512
D0179882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64341902.953062%
B64341402.175940%
C64331111.725478%
D64333034.710089%

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 7599 6435 75 75 0.99% 1.17%
B 7599 6435 28 28 0.37% 0.44%
C 7598 6434 55 55 0.72% 0.85%
D 7598 6434 281 281 3.70% 4.37%

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 1500949 8366.43 723 704 179.3
A 15 233 395121 2199.55 723 704 179.3
A 10 17 97100 537.57 723 704 179.3
B 0 171 162076 1041.95 724 699 154.9
B 10 247 97338 623.96 724 699 154.9
B 5 172 94503 605.66 724 699 154.9
C 6 13 1581141 8034.99 708 702 196.7
C 12 252 77289 389.37 708 702 196.7
C 12 254 66662 335.34 708 702 196.7
D 8 240 610712 3068.95 696 666 198.8
D 2 249 370862 1862.34 696 666 198.8
D 3 160 223314 1120.07 696 666 198.8

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