ASTROSAT CZTI

Data Quality Report

Orbit 26619

Creation date: 2024-06-27T19:31:04.217312
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/AS1A09_145T01_9000003848_26619cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26619cztM0_level2_quad_clean.evt
Size (bytes)550,563,84076,443,840
Size525.1 MB 72.9 MB
Events in quadrant A3,254,803507,335
Events in quadrant B3,557,633508,880
Events in quadrant C3,169,885483,963
Events in quadrant D6,314,036424,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131190
B0148930
C0127490
D0225300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5584280.501433%
B5584410.734241%
C5584661.181948%
D558486815.544413%

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 6949 5585 6 6 0.09% 0.11%
B 6949 5585 4 4 0.06% 0.07%
C 6949 5585 3 3 0.04% 0.05%
D 6949 5585 859 859 12.36% 15.38%

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 13 137192 856.96 805 796 159.2
A 5 168 15545 92.67 805 796 159.2
A 13 254 9023 51.69 805 796 159.2
B 0 189 393786 2686.87 784 770 146.3
B 0 245 43799 294.17 784 770 146.3
B 5 172 22339 147.45 784 770 146.3
C 14 238 126028 715.38 758 768 175.1
C 15 208 66812 377.19 758 768 175.1
C 3 233 20732 114.02 758 768 175.1
D 1 52 2767122 14719.64 728 712 187.9
D 7 80 692244 3679.54 728 712 187.9
D 2 250 46675 244.56 728 712 187.9

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