ASTROSAT CZTI

Data Quality Report

Orbit 50624

Creation date: 2025-02-06T05:38:17.918484
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/AS1T05_239T01_9000006444_50624cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50624cztM0_level2_quad_clean.evt
Size (bytes)648,155,52088,156,800
Size618.1 MB 84.1 MB
Events in quadrant A3,756,589633,581
Events in quadrant B11,053,433397,522
Events in quadrant C4,377,129611,051
Events in quadrant D4,300,668573,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155292
B0373213
C0175672
D0175762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65051812.782475%
B6504312848.093481%
C65043265.012300%
D65042894.443419%

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 7740 6506 124 124 1.60% 1.91%
B 7739 6504 2808 2808 36.28% 43.17%
C 7739 6505 301 301 3.89% 4.63%
D 7739 6505 230 230 2.97% 3.54%

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 38 190923 1096.84 699 681 173.4
A 4 3 181722 1043.79 699 681 173.4
A 6 161 145506 834.99 699 681 173.4
B 4 170 4509235 38229.79 551 532 117.9
B 5 172 3131643 26549.04 551 532 117.9
B 7 0 336471 2848.46 551 532 117.9
C 15 232 872653 4551.24 686 681 191.6
C 13 3 205454 1068.81 686 681 191.6
C 14 247 152869 794.34 686 681 191.6
D 2 249 725407 3877.41 673 650 186.9
D 8 246 221802 1183.15 673 650 186.9
D 8 176 151460 806.82 673 650 186.9

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