ASTROSAT CZTI

Data Quality Report

Orbit 58395

Creation date: 2026-07-14T07:29:52.792653
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_045T01_9000006590_58395cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58395cztM0_level2_quad_clean.evt
Size (bytes)533,568,96094,109,760
Size508.9 MB 89.8 MB
Events in quadrant A4,728,369614,334
Events in quadrant B4,087,492678,785
Events in quadrant C4,545,628569,251
Events in quadrant D5,901,722548,177

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182572
B0162892
C0178992
D0216742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62903495.548490%
B62902724.324324%
C62905388.553259%
D62903134.976153%

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 7480 6291 298 298 3.98% 4.74%
B 7480 6291 183 183 2.45% 2.91%
C 7480 6291 499 499 6.67% 7.93%
D 7480 6291 275 275 3.68% 4.37%

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 1076900 6113.82 706 688 176.0
A 12 114 453229 2570.83 706 688 176.0
A 2 143 245716 1391.97 706 688 176.0
B 5 172 555562 3681.29 708 683 150.7
B 4 201 231329 1530.2 708 683 150.7
B 6 255 116682 769.58 708 683 150.7
C 9 38 1395086 7492.26 674 668 186.1
C 6 223 252473 1352.96 674 668 186.1
C 4 5 110432 589.77 674 668 186.1
D 5 113 2126751 11006.48 676 647 193.2
D 12 128 577583 2986.7 676 647 193.2
D 11 129 170068 877.06 676 647 193.2

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