ASTROSAT CZTI

Data Quality Report

Orbit 52262

Creation date: 2025-07-21T18:12:29.078922
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_011T05_9000006474_52262cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52262cztM0_level2_quad_clean.evt
Size (bytes)807,796,80061,951,680
Size770.4 MB 59.1 MB
Events in quadrant A3,853,126521,072
Events in quadrant B7,287,315427,881
Events in quadrant C13,497,40137,653
Events in quadrant D4,809,174479,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158271
B0257018
C0440361
D0184101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58623696.294780%
B5861177430.267872%
C5861553694.454871%
D58612884.913837%

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 6867 5863 270 270 3.93% 4.61%
B 6866 5858 1235 1235 17.99% 21.08%
C 6866 5859 4505 4505 65.61% 76.89%
D 6866 5862 298 298 4.34% 5.08%

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 11 3 736370 5037.76 588 575 146.1
A 4 249 327415 2237.77 588 575 146.1
A 6 145 157431 1073.94 588 575 146.1
B 12 32 3430244 31576.72 508 491 108.6
B 10 254 826125 7601.37 508 491 108.6
B 4 171 203881 1872.55 508 491 108.6
C 15 158 9791074 153671.57 229 228 63.7
C 15 224 1313513 20612.58 229 228 63.7
C 15 178 817250 12823.51 229 228 63.7
D 6 42 1309236 8081.51 570 543 161.9
D 11 176 393618 2427.34 570 543 161.9
D 8 176 273649 1686.5 570 543 161.9

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