ASTROSAT CZTI

Data Quality Report

Orbit 39738

Creation date: 2024-06-27T22:08:24.430611
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_022T01_9000005494_39738cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39738cztM0_level2_quad_clean.evt
Size (bytes)328,121,28091,203,840
Size312.9 MB 87.0 MB
Events in quadrant A2,962,267623,242
Events in quadrant B2,465,895637,021
Events in quadrant C3,495,555594,652
Events in quadrant D2,831,513554,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119743
B0105832
C0136992
D0118442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5019591.175533%
B5019260.518031%
C5019781.554094%
D5019831.653716%

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 7140 5020 34 34 0.48% 0.68%
B 7140 5020 12 12 0.17% 0.24%
C 7140 5020 79 79 1.11% 1.57%
D 7140 5020 60 60 0.84% 1.20%

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 449558 3798.87 579 569 118.2
A 13 248 178593 1506.25 579 569 118.2
A 9 143 48327 404.08 579 569 118.2
B 5 255 67295 607.46 579 565 109.9
B 0 190 31125 278.19 579 565 109.9
B 10 246 24448 217.41 579 565 109.9
C 9 187 540370 4116.62 567 572 131.1
C 15 208 465570 3546.18 567 572 131.1
C 15 214 220285 1675.58 567 572 131.1
D 2 250 277185 2005.4 568 552 137.9
D 12 227 126856 915.62 568 552 137.9
D 13 249 86874 625.78 568 552 137.9

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