ASTROSAT CZTI

Data Quality Report

Orbit 20221216_A12_042T01_9000005428_level2

Creation date: 2022-12-19T15:26:52.905925
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_042T01_9000005428cztM0_level2.fits modeM0/AS1A12_042T01_9000005428cztM0_level2_quad_clean.evt
Size (bytes)283,380,480439,971,840
Size270.3 MB 419.6 MB
Events in quadrant A1,624,5702,743,219
Events in quadrant B1,628,2482,953,844
Events in quadrant C1,670,3162,826,875
Events in quadrant D1,457,3762,601,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01099210
B0656490
C0674240
D0729990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06500
B06500
C06500
D06500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3203522396.989231%
B32035990.309037%
C320351160.362104%
D320353991.245513%

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 41203 32025 0 0 0.00% 0.00%
B 41203 32029 0 0 0.00% 0.00%
C 41203 32033 0 0 0.00% 0.00%
D 41203 32023 0 0 0.00% 0.00%

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 0 29 1360 8.94 423 398 107.6
A 9 19 1334 8.7 423 398 107.6
A 7 110 1334 8.7 423 398 107.6
B 2 9 1428 11.7 430 411 86.9
B 3 80 1271 9.89 430 411 86.9
B 2 8 1151 8.51 430 411 86.9
C 1 81 1426 8.84 441 415 114.4
C 1 80 1414 8.74 441 415 114.4
C 1 65 1207 6.93 441 415 114.4
D 7 3 1086 6.33 415 378 111.9
D 3 14 1063 6.12 415 378 111.9
D 10 113 1056 6.06 415 378 111.9

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