ASTROSAT CZTI

Data Quality Report

Orbit 50304

Creation date: 2025-01-15T16:38:35.745488
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/AS1C09_003T01_9000006442_50304cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50304cztM0_level2_quad_clean.evt
Size (bytes)1,060,597,44063,069,120
Size1011.5 MB 60.1 MB
Events in quadrant A5,832,129571,046
Events in quadrant B7,003,786567,278
Events in quadrant C13,808,84363,942
Events in quadrant D12,125,909264,777

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216661
B0251321
C0453791
D0404342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633275211.876184%
B6333141222.295910%
C6333580191.599558%
D6332362957.312066%

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 7462 6333 534 534 7.16% 8.43%
B 7463 6334 980 980 13.13% 15.47%
C 7463 6333 4081 4081 54.68% 64.44%
D 7462 6332 3486 3486 46.72% 55.05%

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 3 114 954499 5692.83 668 650 167.6
A 6 250 422743 2519.16 668 650 167.6
A 0 98 324046 1930.11 668 650 167.6
B 4 206 4038187 29807.97 637 617 135.5
B 6 203 57949 423.26 637 617 135.5
B 5 172 47818 348.47 637 617 135.5
C 4 111 8198546 137740.07 196 194 59.5
C 15 197 3258614 54744.54 196 194 59.5
C 15 127 290006 4869.12 196 194 59.5
D 7 61 5821653 46981.05 441 427 123.9
D 12 6 2464754 19888.71 441 427 123.9
D 15 108 354116 2854.5 441 427 123.9

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