ASTROSAT CZTI

Data Quality Report

Orbit 42587

Creation date: 2024-06-27T22:41:52.972551
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_061T07_9000005818_42587cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42587cztM0_level2_quad_clean.evt
Size (bytes)299,093,76090,973,440
Size285.2 MB 86.8 MB
Events in quadrant A2,866,067609,709
Events in quadrant B2,413,793626,052
Events in quadrant C2,570,615596,535
Events in quadrant D2,798,628543,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118512
B0109803
C0109832
D0122422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5416140.258493%
B541580.147738%
C541530.055402%
D5415300.554017%

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 7178 5417 3 3 0.04% 0.06%
B 7177 5416 1 1 0.01% 0.02%
C 7177 5416 1 1 0.01% 0.02%
D 7177 5416 33 33 0.46% 0.61%

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 544474 4426.15 598 586 122.9
A 3 137 6710 49.84 598 586 122.9
A 13 254 5664 41.32 598 586 122.9
B 0 245 28658 242.36 597 579 115.9
B 5 172 15599 129.64 597 579 115.9
B 12 111 14408 119.36 597 579 115.9
C 15 214 226499 1617.99 592 596 139.6
C 14 254 19529 135.6 592 596 139.6
C 7 220 8509 56.68 592 596 139.6
D 12 217 150570 1051.06 587 571 142.7
D 12 6 88063 613.07 587 571 142.7
D 1 52 88042 612.92 587 571 142.7

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