ASTROSAT CZTI

Data Quality Report

Orbit 20220923_T05_057T01_9000005346_level2

Creation date: 2026-01-05T17:36:02.267104
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_057T01_9000005346cztM0_level2.fits modeM0/AS1T05_057T01_9000005346cztM0_level2_quad_clean.evt
Size (bytes)598,435,200582,174,720
Size570.7 MB 555.2 MB
Events in quadrant A3,635,2303,530,413
Events in quadrant B3,487,4203,450,701
Events in quadrant C3,582,2723,389,303
Events in quadrant D3,067,3622,910,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01548950
B01452920
C01367840
D01740620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012980
B012980
C012980
D012980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02570
B02570
C02570
D02570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341822213.502160%
B634189311.468037%
C634184250.670157%
D6341827654.359961%

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 87768 63407 0 0 0.00% 0.00%
B 87768 63391 0 0 0.00% 0.00%
C 87767 63402 0 0 0.00% 0.00%
D 87768 63395 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 2972 8.84 950 894 235.0
A 9 19 2954 8.77 950 894 235.0
A 7 110 2899 8.53 950 894 235.0
B 2 9 2926 11.12 926 885 183.5
B 3 80 2716 9.98 926 885 183.5
B 5 128 2443 8.49 926 885 183.5
C 1 81 3170 9.39 948 894 242.3
C 1 80 3007 8.72 948 894 242.3
C 3 202 2700 7.45 948 894 242.3
D 7 3 2344 6.57 881 804 234.3
D 10 189 2281 6.3 881 804 234.3
D 6 62 2244 6.15 881 804 234.3

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