ASTROSAT CZTI

Data Quality Report

Orbit 52483

Creation date: 2025-06-25T17:42:47.637771
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/AS1A13_037T01_9000006476_52483cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52483cztM0_level2_quad_clean.evt
Size (bytes)574,467,84049,141,440
Size547.9 MB 46.9 MB
Events in quadrant A1,865,792415,024
Events in quadrant B3,545,779431,637
Events in quadrant C4,821,503338,731
Events in quadrant D10,700,2732,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09108312
B013778335
C018012783
D0367282023

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883
B0892
C0902
D0902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4304140.325279%
B42952866.658906%
C424669816.439001%
D4193417599.570713%

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 4433 4362 11 11 0.25% 0.25%
B 4441 4356 339 339 7.63% 7.78%
C 4412 4308 609 609 13.80% 14.14%
D 4366 4202 3964 3964 90.79% 94.34%

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 60 37750 334.05 446 436 111.7
A 4 3 33419 295.28 446 436 111.7
A 3 14 19211 168.08 446 436 111.7
B 10 254 1620307 17021.84 440 426 95.2
B 7 0 73516 768.04 440 426 95.2
B 10 44 35540 368.98 440 426 95.2
C 12 254 1277235 11603.51 396 392 110.0
C 2 12 856051 7775.94 396 392 110.0
C 15 224 558284 5069.93 396 392 110.0
D 15 93 9483518 302792.93 103 97 31.3
D 6 42 715218 22832.84 103 97 31.3
D 8 176 40168 1279.4 103 97 31.3

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