ASTROSAT CZTI

Data Quality Report

Orbit 42411

Creation date: 2024-06-27T22:39:56.628168
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/AS1T05_138T01_9000005802_42411cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42411cztM0_level2_quad_clean.evt
Size (bytes)336,576,96091,411,200
Size321.0 MB 87.2 MB
Events in quadrant A2,988,860612,283
Events in quadrant B2,682,648629,240
Events in quadrant C2,773,228592,795
Events in quadrant D3,569,852534,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122732
B0120592
C0119092
D0146072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570460.105189%
B5703300.526039%
C5703230.403297%
D57031883.296511%

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 7287 5705 3 3 0.04% 0.05%
B 7286 5704 14 14 0.19% 0.25%
C 7286 5704 17 17 0.23% 0.30%
D 7286 5704 148 148 2.03% 2.59%

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 568827 4488.68 613 599 126.6
A 13 248 29051 224.75 613 599 126.6
A 13 6 11706 87.74 613 599 126.6
B 15 32 74744 627.17 613 595 118.2
B 5 255 54294 454.2 613 595 118.2
B 0 186 52195 436.45 613 595 118.2
C 15 214 237850 1697.57 600 603 139.8
C 14 254 113936 810.93 600 603 139.8
C 4 254 47362 334.57 600 603 139.8
D 1 47 428898 2942.3 590 572 145.6
D 1 52 237185 1625.37 590 572 145.6
D 12 218 121433 830.23 590 572 145.6

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