ASTROSAT CZTI

Data Quality Report

Orbit 53619

Creation date: 2025-08-27T12:17:27.935563
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/AS1A14_004T05_9000006502_53619cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53619cztM0_level2_quad_clean.evt
Size (bytes)1,937,396,160123,336,000
Size1.8 GB 117.6 MB
Events in quadrant A23,900,328396,335
Events in quadrant B14,081,1551,003,562
Events in quadrant C17,756,826723,634
Events in quadrant D15,069,588791,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0791563
B0500643
C0608913
D0528887

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11822804368.034174%
B11823250121.153683%
C11823433036.623530%
D11822300125.384876%

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 12977 11822 7828 7828 60.32% 66.22%
B 12978 11823 1986 1986 15.30% 16.80%
C 12977 11823 4066 4066 31.33% 34.39%
D 12978 11825 3047 3047 23.48% 25.77%

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 78 16285449 83076.49 785 767 196.0
A 4 95 2911600 14849.65 785 767 196.0
A 8 249 607689 3096.22 785 767 196.0
B 10 254 4253278 16915.18 1180 1136 251.4
B 15 20 3837878 15262.71 1180 1136 251.4
B 5 172 226839 897.85 1180 1136 251.4
C 15 224 7876129 27489.82 1043 1035 286.5
C 1 241 2965769 10349.08 1043 1035 286.5
C 13 3 578343 2015.23 1043 1035 286.5
D 8 176 3711975 11051.46 1151 1098 335.8
D 12 34 3544563 10552.89 1151 1098 335.8
D 10 172 1014775 3018.86 1151 1098 335.8

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