ASTROSAT CZTI

Data Quality Report

Orbit 57352

Creation date: 2026-05-05T03:31:26.484112
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_102T01_9000006572_57352cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57352cztM0_level2_quad_clean.evt
Size (bytes)430,940,16083,165,760
Size411.0 MB 79.3 MB
Events in quadrant A3,184,258546,825
Events in quadrant B2,921,365579,728
Events in quadrant C4,095,054508,592
Events in quadrant D5,270,231452,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014570573
B013829619
C017320768
D020861885

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01308
B01306
C01308
D01308

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200500.806452%
B6182941.520544%
C61792433.932675%
D616268511.116521%

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 7612 6593 20 20 0.26% 0.30%
B 7620 6590 14 14 0.18% 0.21%
C 7616 6571 198 198 2.60% 3.01%
D 7605 6546 612 612 8.05% 9.35%

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 3 367581 2194.41 667 651 167.2
A 4 95 85819 509.34 667 651 167.2
A 12 194 68050 403.08 667 651 167.2
B 7 252 95608 666.79 657 633 142.4
B 5 185 88132 614.3 657 633 142.4
B 1 191 32373 222.84 657 633 142.4
C 15 224 1435159 8318.49 630 623 172.5
C 14 254 45965 262.92 630 623 172.5
C 11 244 36201 206.3 630 623 172.5
D 8 240 2448007 14190.56 607 577 172.5
D 2 249 170574 985.66 607 577 172.5
D 8 48 75203 432.69 607 577 172.5

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