ASTROSAT CZTI

Data Quality Report

Orbit 38871

Creation date: 2024-06-27T21:57:30.646758
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/AS1A12_077T06_9000005408_38871cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38871cztM0_level2_quad_clean.evt
Size (bytes)539,026,56087,765,120
Size514.1 MB 83.7 MB
Events in quadrant A3,021,220636,548
Events in quadrant B6,474,744528,500
Events in quadrant C2,861,465622,328
Events in quadrant D7,154,769472,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125283
B0231162
C0121822
D0252772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5680130.228873%
B5680128722.658451%
C5680290.510563%
D5680119821.091549%

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 7293 5681 3 3 0.04% 0.05%
B 7293 5681 1042 1042 14.29% 18.34%
C 7293 5681 31 31 0.43% 0.55%
D 7293 5681 1184 1184 16.23% 20.84%

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 414834 3244.22 625 612 127.7
A 12 16 158261 1234.72 625 612 127.7
A 12 194 26882 205.75 625 612 127.7
B 4 251 3542529 32628.71 563 549 108.6
B 5 184 474343 4364.59 563 549 108.6
B 4 171 183990 1689.86 563 549 108.6
C 14 254 252504 1761.89 607 610 143.0
C 15 214 233631 1629.88 607 610 143.0
C 0 10 9317 60.9 607 610 143.0
D 12 227 3135828 23164.58 553 536 135.3
D 2 249 1298064 9586.57 553 536 135.3
D 2 250 278877 2056.48 553 536 135.3

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