ASTROSAT CZTI

Data Quality Report

Orbit 19973

Creation date: 2024-06-27T18:09:35.073240
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/AS1C04_005T01_9000002976_19973cztM0_level2.evt modeM0/AS1C04_005T01_9000002976_19973cztM0_level2_quad_clean.evt
Size (bytes)875,488,32063,270,720
Size834.9 MB 60.3 MB
Events in quadrant A13,697,185171,789
Events in quadrant B3,747,249451,697
Events in quadrant C4,025,352421,593
Events in quadrant D4,607,491418,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451622
B0151842
C0160772
D0180502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469552785.438244%
B64691041.607667%
C64692253.478126%
D64682644.081633%

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 7728 6468 4273 4273 55.29% 66.06%
B 7729 6469 24 24 0.31% 0.37%
C 7729 6469 86 86 1.11% 1.33%
D 7728 6468 224 224 2.90% 3.46%

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 14 238 12228785 175587.94 347 340 69.6
A 14 254 121243 1736.04 347 340 69.6
A 11 29 4492 59.62 347 340 69.6
B 7 220 178316 1062.81 898 881 166.9
B 12 111 19372 110.76 898 881 166.9
B 11 111 17192 97.7 898 881 166.9
C 3 233 440428 2236.24 856 866 196.6
C 14 238 138469 700.05 856 866 196.6
C 9 221 73537 369.71 856 866 196.6
D 1 52 780422 3641.61 881 857 214.1
D 7 238 296501 1381.05 881 857 214.1
D 9 1 173541 806.67 881 857 214.1

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