ASTROSAT CZTI

Data Quality Report

Orbit 59417

Creation date: 2026-09-21T01:12:41.744113
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_033T01_9000006608_59417cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59417cztM0_level2_quad_clean.evt
Size (bytes)500,253,12098,464,320
Size477.1 MB 93.9 MB
Events in quadrant A4,417,154641,959
Events in quadrant B5,148,426675,538
Events in quadrant C3,942,598618,154
Events in quadrant D4,475,706567,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179356
B0200791
C01677510
D0183404

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68682593.771112%
B68706329.199418%
C68673705.388088%
D68684416.421083%

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 7320 6871 172 172 2.35% 2.50%
B 7320 6871 357 357 4.88% 5.20%
C 7320 6870 233 233 3.18% 3.39%
D 7320 6870 361 361 4.93% 5.25%

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 14 238 1240382 6821.93 743 726 181.7
A 14 254 155998 854.48 743 726 181.7
A 3 245 52434 284.55 743 726 181.7
B 5 185 1079072 6900.92 729 698 156.3
B 4 236 745938 4769.07 729 698 156.3
B 4 201 113690 723.08 729 698 156.3
C 2 12 901689 4546.07 724 716 198.2
C 4 5 81304 406.63 724 716 198.2
C 12 252 58765 292.9 724 716 198.2
D 2 249 1105262 5545.93 712 683 199.2
D 6 239 252817 1265.93 712 683 199.2
D 2 120 125251 625.44 712 683 199.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct