ASTROSAT CZTI

Data Quality Report

Orbit 53800

Creation date: 2025-09-08T04:09:29.787191
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_53800cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53800cztM0_level2_quad_clean.evt
Size (bytes)911,666,88065,992,320
Size869.4 MB 62.9 MB
Events in quadrant A15,779,69448,525
Events in quadrant B4,280,003588,198
Events in quadrant C6,459,288503,350
Events in quadrant D6,744,779422,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511621
B0173001
C0235351
D02440711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244584193.545804%
B62444727.559257%
C624483813.420884%
D6241132721.262618%

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 7194 6245 5670 5670 78.82% 90.79%
B 7194 6245 315 315 4.38% 5.04%
C 7194 6245 705 705 9.80% 11.29%
D 7192 6243 1133 1133 15.75% 18.15%

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 13710526 166529.84 324 316 82.3
A 3 78 488065 5924.4 324 316 82.3
A 0 8 152526 1848.81 324 316 82.3
B 5 185 1226805 9145.96 625 602 134.1
B 8 234 312939 2329.65 625 602 134.1
B 7 252 85515 633.35 625 602 134.1
C 15 224 3021533 17863.89 600 593 169.1
C 1 241 247074 1457.53 600 593 169.1
C 3 242 244554 1442.63 600 593 169.1
D 11 245 2399921 15130.46 555 531 158.6
D 1 241 845953 5331.2 555 531 158.6
D 10 172 262376 1651.18 555 531 158.6

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