ASTROSAT CZTI

Data Quality Report

Orbit 53717

Creation date: 2025-09-02T16:57:20.999630
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_53717cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53717cztM0_level2_quad_clean.evt
Size (bytes)1,679,106,240104,466,240
Size1.6 GB 99.6 MB
Events in quadrant A26,156,08852,699
Events in quadrant B5,901,7181,085,333
Events in quadrant C10,323,200875,961
Events in quadrant D18,971,930427,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08490410
B0249002
C0380212
D0635792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104121002396.263926%
B104132992.871411%
C10413130412.522808%
D10414587256.385635%

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 12718 10414 9546 9546 75.06% 91.67%
B 12718 10416 105 105 0.83% 1.01%
C 12718 10416 914 914 7.19% 8.77%
D 12719 10415 4954 4954 38.95% 47.57%

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 21284767 167172.23 506 494 127.3
A 3 78 2164078 16993.35 506 494 127.3
A 8 245 343428 2693.49 506 494 127.3
B 5 185 876103 3690.58 1115 1078 237.1
B 1 223 240616 1010.3 1115 1078 237.1
B 10 254 159958 670.11 1115 1078 237.1
C 15 224 3175933 11091.23 1044 1038 286.3
C 15 158 1284308 4483.0 1044 1038 286.3
C 15 219 439444 1531.53 1044 1038 286.3
D 8 176 7082121 33560.38 737 705 211.0
D 2 62 4469017 21176.31 737 705 211.0
D 2 172 3179745 15066.17 737 705 211.0

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