ASTROSAT CZTI

Data Quality Report

Orbit 53766

Creation date: 2025-09-05T21:11:37.373004
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_022T04_9000006506_53766cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53766cztM0_level2_quad_clean.evt
Size (bytes)866,946,24091,203,840
Size826.8 MB 87.0 MB
Events in quadrant A16,849,099210,266
Events in quadrant B3,761,815751,891
Events in quadrant C5,493,448651,681
Events in quadrant D5,402,572622,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552460
B0166300
C0216330
D0213260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7541554473.518101%
B7541640.848694%
C75413204.243469%
D75413064.057817%

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 7540 7540 5618 5618 74.51% 74.51%
B 7541 7541 40 40 0.53% 0.53%
C 7541 7541 315 315 4.18% 4.18%
D 7541 7541 327 327 4.34% 4.34%

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 3 63 14114278 115107.81 489 477 122.6
A 4 249 395585 3222.38 489 477 122.6
A 3 78 230505 1876.04 489 477 122.6
B 5 185 136554 806.49 784 756 168.4
B 5 250 111314 656.59 784 756 168.4
B 0 213 93092 548.37 784 756 168.4
C 15 224 2003261 9562.48 760 752 209.4
C 15 158 108634 515.16 760 752 209.4
C 12 252 94238 446.42 760 752 209.4
D 1 241 1240656 5700.08 766 734 217.5
D 2 172 240797 1103.6 766 734 217.5
D 14 52 167602 767.11 766 734 217.5

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