ASTROSAT CZTI

Data Quality Report

Orbit 53250

Creation date: 2025-08-02T01:42:13.258772
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/AS1C09_011T08_9000006492_53250cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53250cztM0_level2_quad_clean.evt
Size (bytes)703,961,28087,886,080
Size671.3 MB 83.8 MB
Events in quadrant A5,085,788596,712
Events in quadrant B5,566,408656,061
Events in quadrant C10,414,130382,061
Events in quadrant D4,484,359568,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196063
B0209903
C0354433
D0178153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65536079.262933%
B65534837.370670%
C6553282543.110026%
D65532884.394934%

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 7658 6555 567 567 7.40% 8.65%
B 7658 6555 358 358 4.67% 5.46%
C 7658 6554 2527 2527 33.00% 38.56%
D 7658 6554 226 226 2.95% 3.45%

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 12 115 1068352 6249.45 680 664 170.8
A 7 206 389455 2275.69 680 664 170.8
A 0 8 297348 1736.57 680 664 170.8
B 12 33 1717688 11973.81 678 654 143.4
B 12 17 234779 1632.68 678 654 143.4
B 2 249 172411 1197.75 678 654 143.4
C 15 165 6077014 41638.7 530 525 145.9
C 15 224 959537 6571.56 530 525 145.9
C 4 5 533178 3649.97 530 525 145.9
D 8 48 414521 2133.81 674 641 194.0
D 12 3 326345 1679.21 674 641 194.0
D 2 37 194872 1001.38 674 641 194.0

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