ASTROSAT CZTI

Data Quality Report

Orbit 52468

Creation date: 2025-06-26T12:16:08.611629
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/AS1A13_037T01_9000006476_52468cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52468cztM0_level2_quad_clean.evt
Size (bytes)477,987,84046,500,480
Size455.8 MB 44.3 MB
Events in quadrant A2,879,185364,046
Events in quadrant B2,060,108414,925
Events in quadrant C2,849,267355,439
Events in quadrant D9,604,146439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012231968
B099521125
C0124461241
D0363795282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0884
B08711
C0875
D0876

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39152125.415070%
B3904220.563525%
C39101563.989770%
D3698369599.918875%

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 7861 4010 216 216 2.75% 5.39%
B 7861 4006 3 3 0.04% 0.07%
C 7861 4005 155 155 1.97% 3.87%
D 7861 3876 3324 3324 42.28% 85.76%

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 8 249 1143950 11682.08 394 386 97.9
A 3 14 68760 698.47 394 386 97.9
A 5 240 23938 240.6 394 386 97.9
B 10 254 250940 2890.13 401 388 86.7
B 4 171 90780 1042.68 401 388 86.7
B 4 81 37949 433.27 401 388 86.7
C 2 12 365414 3375.13 385 381 108.2
C 13 3 289288 2671.26 385 381 108.2
C 15 199 258544 2387.0 385 381 108.2
D 15 93 8223512 278308.16 96 92 29.5
D 6 42 679749 23001.88 96 92 29.5
D 2 153 167712 5672.82 96 92 29.5

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