ASTROSAT CZTI

Data Quality Report

Orbit 54167

Creation date: 2025-10-02T19:27:16.837668
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_012T01_9000006512_54167cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54167cztM0_level2_quad_clean.evt
Size (bytes)640,123,20077,696,640
Size610.5 MB 74.1 MB
Events in quadrant A3,648,981579,061
Events in quadrant B9,853,172385,064
Events in quadrant C3,219,395563,964
Events in quadrant D6,504,577402,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150681
B03347414
C0138941
D0236116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60403215.314570%
B6039277545.951316%
C60401131.870861%
D6038153325.389202%

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 7100 6041 155 155 2.18% 2.57%
B 7100 6041 1942 1942 27.35% 32.15%
C 7100 6041 57 57 0.80% 0.94%
D 7100 6040 1224 1224 17.24% 20.26%

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 29 503662 3186.65 638 624 157.9
A 15 174 497886 3150.06 638 624 157.9
A 3 14 111118 699.96 638 624 157.9
B 5 172 5210031 46824.43 517 499 111.3
B 6 255 945613 8494.89 517 499 111.3
B 15 20 879078 7896.86 517 499 111.3
C 15 177 411811 2364.43 626 618 173.9
C 14 254 111752 639.04 626 618 173.9
C 12 250 85713 489.31 626 618 173.9
D 8 176 4010766 26645.88 526 501 150.5
D 3 176 119582 791.22 526 501 150.5
D 7 62 78927 521.1 526 501 150.5

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