ASTROSAT CZTI

Data Quality Report

Orbit 55667

Creation date: 2026-01-12T12:13:08.823290
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_021T06_9000006538_55667cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55667cztM0_level2_quad_clean.evt
Size (bytes)449,000,640101,793,600
Size428.2 MB 97.1 MB
Events in quadrant A5,672,381622,156
Events in quadrant B3,156,153719,295
Events in quadrant C3,423,642633,601
Events in quadrant D3,795,727594,746

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220612
B0153652
C0161442
D0166742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73586849.296004%
B73591341.820900%
C73591421.929610%
D73591421.929610%

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 7728 7361 404 404 5.23% 5.49%
B 7729 7362 8 8 0.10% 0.11%
C 7729 7362 52 52 0.67% 0.71%
D 7729 7362 27 27 0.35% 0.37%

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 7 64 1550378 8551.24 736 718 181.2
A 12 115 604459 3331.53 736 718 181.2
A 0 8 319644 1759.88 736 718 181.2
B 7 252 82143 504.75 746 717 161.3
B 0 171 39847 242.56 746 717 161.3
B 12 111 19308 115.24 746 717 161.3
C 6 9 113837 571.92 726 717 197.8
C 6 223 110952 557.34 726 717 197.8
C 13 3 108806 546.49 726 717 197.8
D 11 129 354653 1717.23 733 699 206.1
D 8 245 207557 1003.58 733 699 206.1
D 7 129 127956 617.39 733 699 206.1

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