ASTROSAT CZTI

Data Quality Report

Orbit 52919

Creation date: 2025-07-16T23:27:36.773082
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_011T06_9000006484_52919cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52919cztM0_level2_quad_clean.evt
Size (bytes)893,445,12063,400,320
Size852.1 MB 60.5 MB
Events in quadrant A14,749,6369,228
Events in quadrant B3,585,542611,734
Events in quadrant C5,680,698481,868
Events in quadrant D8,603,138406,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478917
B0146561
C0209521
D0296572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5860579998.959044%
B58611612.746972%
C586182214.024910%
D5860159527.218430%

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 6981 5862 5199 5199 74.47% 88.69%
B 6981 5862 25 25 0.36% 0.43%
C 6981 5862 739 739 10.59% 12.61%
D 6980 5861 1432 1432 20.52% 24.43%

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 9 191 13398824 228703.26 227 221 58.6
A 3 78 246497 4203.73 227 221 58.6
A 0 8 47848 812.95 227 221 58.6
B 10 254 681920 5212.52 616 594 130.7
B 4 81 89035 676.62 616 594 130.7
B 12 32 70968 538.4 616 594 130.7
C 7 80 2626773 16859.33 574 569 155.8
C 2 239 125573 802.48 574 569 155.8
C 1 45 113447 724.64 574 569 155.8
D 8 176 1698039 10827.33 549 522 156.8
D 15 78 1555026 9915.15 549 522 156.8
D 15 125 1024370 6530.45 549 522 156.8

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