ASTROSAT CZTI

Data Quality Report

Orbit 53175

Creation date: 2025-07-31T14:32:12.503764
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_011T06_9000006490_53175cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53175cztM0_level2_quad_clean.evt
Size (bytes)820,108,80070,188,480
Size782.1 MB 66.9 MB
Events in quadrant A4,361,495576,594
Events in quadrant B5,084,624578,721
Events in quadrant C4,997,457536,655
Events in quadrant D15,434,8791,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174101
B0194411
C0192341
D0501177

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61743135.069647%
B617563310.251012%
C61753415.522267%
D6174615999.757046%

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 7084 6175 272 272 3.84% 4.40%
B 7085 6176 488 488 6.89% 7.90%
C 7085 6176 278 278 3.92% 4.50%
D 7083 6173 5625 5625 79.42% 91.12%

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 80 486197 3091.34 627 613 157.1
A 0 8 325673 2069.41 627 613 157.1
A 15 174 294900 1873.5 627 613 157.1
B 10 191 2039325 15862.48 611 593 128.5
B 4 81 146565 1135.74 611 593 128.5
B 4 171 83165 642.46 611 593 128.5
C 15 224 912756 5398.47 610 603 169.0
C 0 240 570567 3373.26 610 603 169.0
C 7 80 283288 1673.04 610 603 169.0
D 15 125 12237231 325049.42 122 115 37.6
D 8 176 2315253 61496.05 122 115 37.6
D 13 170 142486 3781.74 122 115 37.6

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