ASTROSAT CZTI

Data Quality Report

Orbit 53429

Creation date: 2025-08-14T03:28:49.470698
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_011T09_9000006494_53429cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53429cztM0_level2_quad_clean.evt
Size (bytes)948,602,88066,703,680
Size904.7 MB 63.6 MB
Events in quadrant A5,120,306575,370
Events in quadrant B4,710,006627,891
Events in quadrant C16,286,07913,139
Events in quadrant D8,511,617364,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196101
B0183451
C0526962
D0297511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62834707.480503%
B62833585.697915%
C6282619698.631009%
D6283236037.561674%

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 7153 6284 432 432 6.04% 6.87%
B 7153 6284 212 212 2.96% 3.37%
C 7152 6283 6030 6030 84.31% 95.97%
D 7153 6284 2011 2011 28.11% 32.00%

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 1940422 12237.73 632 617 158.5
A 15 174 257816 1622.6 632 617 158.5
A 12 80 56652 353.51 632 617 158.5
B 4 171 469141 3459.03 639 615 135.5
B 4 206 379045 2793.87 639 615 135.5
B 10 28 308502 2273.07 639 615 135.5
C 7 64 11602039 219144.67 187 184 52.9
C 1 241 2107474 39804.09 187 184 52.9
C 15 224 969763 18314.14 187 184 52.9
D 8 176 4818409 34035.08 493 472 141.6
D 13 153 629847 4446.06 493 472 141.6
D 2 172 595485 4203.32 493 472 141.6

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