ASTROSAT CZTI

Data Quality Report

Orbit 53439

Creation date: 2025-08-14T19:30:33.104425
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_002T06_9000006496_53439cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53439cztM0_level2_quad_clean.evt
Size (bytes)695,136,96093,723,840
Size662.9 MB 89.4 MB
Events in quadrant A6,605,904577,348
Events in quadrant B5,989,773696,827
Events in quadrant C8,126,648502,825
Events in quadrant D4,485,949589,453

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242092
B0223442
C0287642
D0178482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6758124618.437408%
B67576499.604854%
C6757159723.634749%
D67572593.833062%

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 7808 6759 1056 1056 13.52% 15.62%
B 7807 6758 328 328 4.20% 4.85%
C 7807 6758 1367 1367 17.51% 20.23%
D 7807 6758 175 175 2.24% 2.59%

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 2094012 11576.93 727 709 180.8
A 15 174 1254284 6932.85 727 709 180.8
A 4 249 173677 956.59 727 709 180.8
B 10 254 872259 5463.96 741 716 159.5
B 4 171 838258 5250.8 741 716 159.5
B 4 206 422240 2642.66 741 716 159.5
C 1 241 1999657 11235.73 652 646 177.9
C 15 224 1604864 9016.74 652 646 177.9
C 12 252 692291 3887.49 652 646 177.9
D 13 153 377513 1792.37 741 710 210.2
D 15 171 274720 1303.41 741 710 210.2
D 0 18 256863 1218.47 741 710 210.2

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