ASTROSAT CZTI

Data Quality Report

Orbit 53817

Creation date: 2025-09-09T05:45:55.688922
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_53817cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53817cztM0_level2_quad_clean.evt
Size (bytes)1,076,973,12068,132,160
Size1.0 GB 65.0 MB
Events in quadrant A15,059,101212,895
Events in quadrant B3,930,216686,492
Events in quadrant C7,933,860541,378
Events in quadrant D12,423,458152,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493412
B0165742
C0282562
D0415072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6725485472.178439%
B67252183.241636%
C6725119417.754647%
D6725497473.962825%

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 7845 6725 4870 4870 62.08% 72.42%
B 7845 6726 130 130 1.66% 1.93%
C 7845 6726 1021 1021 13.01% 15.18%
D 7844 6724 3483 3483 44.40% 51.80%

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 12672510 97688.91 520 509 129.7
A 4 249 154482 1186.98 520 509 129.7
A 8 249 95834 734.86 520 509 129.7
B 5 172 560428 3672.7 708 683 152.4
B 8 234 194045 1268.72 708 683 152.4
B 7 0 96934 631.54 708 683 152.4
C 15 224 4154476 22855.3 654 647 181.7
C 15 158 305859 1679.34 654 647 181.7
C 1 241 290303 1593.75 654 647 181.7
D 8 176 7813911 97241.38 273 259 80.4
D 2 172 2643391 32893.94 273 259 80.4
D 10 172 415792 5171.33 273 259 80.4

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