ASTROSAT CZTI

Data Quality Report

Orbit 53398

Creation date: 2025-08-12T01:08:45.848632
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/AS1C09_011T09_9000006494_53398cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53398cztM0_level2_quad_clean.evt
Size (bytes)710,614,08089,187,840
Size677.7 MB 85.1 MB
Events in quadrant A4,938,482601,307
Events in quadrant B5,847,754644,571
Events in quadrant C8,874,300477,109
Events in quadrant D6,151,547532,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190572
B0217932
C0308442
D0226512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63716039.464762%
B637171411.207032%
C6371173927.295558%
D637165910.343745%

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 7551 6372 484 484 6.41% 7.60%
B 7551 6372 451 451 5.97% 7.08%
C 7550 6371 1457 1457 19.30% 22.87%
D 7551 6372 601 601 7.96% 9.43%

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 8 249 1046503 6386.43 665 650 163.8
A 15 174 353293 2153.39 665 650 163.8
A 3 62 275260 1676.89 665 650 163.8
B 2 249 1231520 8789.44 664 640 140.0
B 4 171 783460 5589.94 664 640 140.0
B 4 206 242784 1729.1 664 640 140.0
C 15 224 2280931 13843.48 604 599 164.7
C 15 178 1659016 10067.95 604 599 164.7
C 14 80 535992 3250.27 604 599 164.7
D 8 176 1664796 9205.3 639 611 180.8
D 0 18 906638 5011.61 639 611 180.8
D 3 12 354202 1955.86 639 611 180.8

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