ASTROSAT CZTI

Data Quality Report

Orbit 53590

Creation date: 2025-08-25T00:00:38.733033
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_004T05_9000006502_53590cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53590cztM0_level2_quad_clean.evt
Size (bytes)1,038,355,20079,770,240
Size990.3 MB 76.1 MB
Events in quadrant A11,032,025404,306
Events in quadrant B6,192,225667,089
Events in quadrant C11,047,059403,356
Events in quadrant D9,616,179445,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376221
B0233301
C0377491
D0335194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7108325645.807541%
B710981711.492474%
C7109314844.281896%
D7108231832.611142%

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 7387 7108 2584 2584 34.98% 36.35%
B 7389 7111 365 365 4.94% 5.13%
C 7389 7111 2252 2252 30.48% 31.67%
D 7387 7108 2081 2081 28.17% 29.28%

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 62 7697354 49537.73 624 608 155.4
A 3 63 240213 1542.14 624 608 155.4
A 4 239 169284 1085.63 624 608 155.4
B 4 206 1705967 10730.14 744 717 158.9
B 5 185 483222 3036.12 744 717 158.9
B 5 172 187055 1172.52 744 717 158.9
C 4 5 4031720 24597.31 595 589 163.9
C 15 224 3633912 22169.95 595 589 163.9
C 12 252 169061 1027.99 595 589 163.9
D 8 176 5747196 31809.34 625 595 180.7
D 7 70 382475 2113.83 625 595 180.7
D 2 153 242898 1341.23 625 595 180.7

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