ASTROSAT CZTI

Data Quality Report

Orbit 42796

Creation date: 2024-06-27T22:44:20.584444
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/AS1A05_013T01_9000005822_42796cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42796cztM0_level2_quad_clean.evt
Size (bytes)300,087,36086,771,520
Size286.2 MB 82.8 MB
Events in quadrant A2,820,495583,910
Events in quadrant B2,566,556591,811
Events in quadrant C2,528,773569,774
Events in quadrant D2,790,840521,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112622
B0109452
C0106382
D0118452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5150130.252427%
B5150300.582524%
C515040.077670%
D5150621.203883%

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 7003 5151 6 6 0.09% 0.12%
B 7003 5151 20 20 0.29% 0.39%
C 7003 5151 2 2 0.03% 0.04%
D 7003 5151 59 59 0.84% 1.15%

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 10 83 554467 4699.98 575 563 117.9
A 15 223 21631 178.77 575 563 117.9
A 2 79 7717 60.7 575 563 117.9
B 7 202 129607 1174.54 567 553 109.9
B 0 229 58601 528.31 567 553 109.9
B 15 85 41541 373.04 567 553 109.9
C 15 214 210861 1605.69 560 564 131.0
C 8 79 71833 544.16 560 564 131.0
C 14 254 53050 400.75 560 564 131.0
D 1 52 339730 2490.31 558 542 136.2
D 12 233 87430 637.93 558 542 136.2
D 7 96 77803 567.25 558 542 136.2

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