ASTROSAT CZTI

Data Quality Report

Orbit 53488

Creation date: 2025-08-18T03:08:21.282601
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_002T07_9000006498_53488cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53488cztM0_level2_quad_clean.evt
Size (bytes)1,047,130,56083,934,720
Size998.6 MB 80.0 MB
Events in quadrant A11,466,721489,876
Events in quadrant B6,882,060710,165
Events in quadrant C15,948,235193,100
Events in quadrant D3,894,517634,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392227
B0254873
C0524383
D0168683

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7372275937.425393%
B737297213.185024%
C7372558275.718937%
D73721932.618014%

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 8807 7373 2400 2400 27.25% 32.55%
B 8807 7374 674 674 7.65% 9.14%
C 8806 7371 5330 5330 60.53% 72.31%
D 8807 7374 93 93 1.06% 1.26%

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 6519614 37831.17 703 687 172.3
A 15 174 1251093 7256.46 703 687 172.3
A 3 62 608705 3528.5 703 687 172.3
B 2 249 1943465 11663.73 782 754 166.6
B 0 213 415244 2488.53 782 754 166.6
B 10 254 370835 2221.91 782 754 166.6
C 7 64 11078933 87378.92 461 456 126.8
C 15 224 1164614 9182.03 461 456 126.8
C 9 38 518423 4085.34 461 456 126.8
D 3 12 280504 1227.01 797 763 228.0
D 7 70 102650 446.9 797 763 228.0
D 2 249 97301 423.44 797 763 228.0

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