ASTROSAT CZTI

Data Quality Report

Orbit 52007

Creation date: 2025-05-10T10:18:38.059855
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_011T06_9000006468_52007cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52007cztM0_level2_quad_clean.evt
Size (bytes)889,358,40088,148,160
Size848.2 MB 84.1 MB
Events in quadrant A6,374,595584,044
Events in quadrant B9,462,861531,112
Events in quadrant C8,016,338533,545
Events in quadrant D8,527,432532,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239050
B0330260
C0286170
D0303050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A699784012.005145%
B6998214930.708774%
C6998140820.120034%
D699895613.661046%

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 6997 6997 736 736 10.52% 10.52%
B 6998 6998 1202 1202 17.18% 17.18%
C 6998 6998 1402 1402 20.03% 20.03%
D 6998 6998 1072 1072 15.32% 15.32%

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 14 1528289 8867.68 695 679 172.3
A 8 246 444721 2577.64 695 679 172.3
A 7 64 391588 2269.2 695 679 172.3
B 7 0 5825649 41363.18 659 635 140.8
B 4 206 367749 2606.86 659 635 140.8
B 10 247 107571 759.35 659 635 140.8
C 15 224 3486074 19046.75 655 647 183.0
C 4 5 827873 4520.53 655 647 183.0
C 15 178 374084 2040.71 655 647 183.0
D 12 6 1843638 9847.54 663 635 187.2
D 2 172 1589700 8490.7 663 635 187.2
D 12 17 544779 2907.47 663 635 187.2

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