ASTROSAT CZTI

Data Quality Report

Orbit 55098

Creation date: 2025-12-05T17:19:35.820198
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_025T01_9000006530_55098cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55098cztM0_level2_quad_clean.evt
Size (bytes)2,147,400,000470,059,200
Size2.0 GB 448.3 MB
Events in quadrant A14,282,3123,151,218
Events in quadrant B14,498,0293,383,295
Events in quadrant C19,452,8222,939,953
Events in quadrant D28,808,0592,582,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066521151
B067118117
C080513121
D0108122163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06442
C06440
D06440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316642310.729535%
B316683661.155741%
C316689042.854617%
D31669355611.228646%

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 37852 31684 63 63 0.17% 0.20%
B 37870 31690 55 55 0.15% 0.17%
C 37857 31684 658 658 1.74% 2.08%
D 37864 31684 3373 3373 8.91% 10.65%

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 61 259794 303.08 3447 3375 846.0
A 4 3 248165 289.34 3447 3375 846.0
A 0 8 154684 178.84 3447 3375 846.0
B 4 21 530854 721.75 3408 3285 731.0
B 5 185 233400 314.81 3408 3285 731.0
B 5 172 105976 140.49 3408 3285 731.0
C 3 242 2610232 2860.01 3312 3277 911.5
C 13 3 1321850 1446.56 3312 3277 911.5
C 6 223 1086778 1188.67 3312 3277 911.5
D 2 249 5304744 5820.57 3186 3047 910.9
D 15 94 4199491 4607.15 3186 3047 910.9
D 6 239 2317771 2541.26 3186 3047 910.9

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