ASTROSAT CZTI

Data Quality Report

Orbit 53688

Creation date: 2025-08-31T13:59:11.006357
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_022T05_9000006504_53688cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53688cztM0_level2_quad_clean.evt
Size (bytes)935,674,56069,860,160
Size892.3 MB 66.6 MB
Events in quadrant A15,131,97197,531
Events in quadrant B3,172,401694,638
Events in quadrant C11,067,114332,175
Events in quadrant D4,775,861550,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493045
B0136961
C0371711
D0185871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308555187.999366%
B63081261.997464%
C6308329552.235257%
D63084406.975269%

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 7487 6307 5435 5435 72.59% 86.17%
B 7488 6308 33 33 0.44% 0.52%
C 7488 6308 3011 3011 40.21% 47.73%
D 7488 6308 391 391 5.22% 6.20%

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 63 10588754 105931.92 395 386 100.0
A 3 78 2413850 24145.63 395 386 100.0
A 12 17 293646 2933.94 395 386 100.0
B 5 185 262570 1696.82 713 689 154.3
B 12 111 17664 109.99 713 689 154.3
B 11 111 16722 103.88 713 689 154.3
C 15 224 5615134 40011.66 511 507 140.3
C 1 241 2182322 15548.33 511 507 140.3
C 7 64 984750 7014.04 511 507 140.3
D 8 176 1009603 5264.41 674 643 191.7
D 10 172 285295 1485.22 674 643 191.7
D 2 37 201850 1049.83 674 643 191.7

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