ASTROSAT CZTI

Data Quality Report

Orbit 52946

Creation date: 2025-07-17T08:14:09.747826
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/AS1A13_003T01_9000006486_52946cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52946cztM0_level2_quad_clean.evt
Size (bytes)943,948,80062,478,720
Size900.2 MB 59.6 MB
Events in quadrant A15,415,60617,846
Events in quadrant B3,207,718639,472
Events in quadrant C9,814,534345,572
Events in quadrant D6,031,571462,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500568
B0138632
C03348918
D0221341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107595097.429180%
B61071472.407074%
C6104246640.399738%
D610895315.602489%

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 7202 6106 5679 5679 78.85% 93.01%
B 7203 6109 68 68 0.94% 1.11%
C 7203 6108 2194 2194 30.46% 35.92%
D 7203 6109 660 660 9.16% 10.80%

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 14193297 211878.04 266 259 67.0
A 12 17 50854 755.3 266 259 67.0
A 0 8 28354 419.41 266 259 67.0
B 1 255 372759 2657.49 648 627 140.0
B 10 254 96438 684.21 648 627 140.0
B 10 63 46488 327.5 648 627 140.0
C 15 254 3137636 23067.68 485 480 136.0
C 13 3 2041878 15010.51 485 480 136.0
C 10 171 1308622 9618.84 485 480 136.0
D 8 176 1785132 10755.49 578 551 165.9
D 15 78 920572 5544.87 578 551 165.9
D 2 249 290865 1749.69 578 551 165.9

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