ASTROSAT CZTI

Data Quality Report

Orbit 07891

Creation date: 2024-06-27T15:25:17.006218
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/AS1A02_071T01_9000001078_07891cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07891cztM0_level2_quad_clean.evt
Size (bytes)597,896,64096,382,080
Size570.2 MB 91.9 MB
Events in quadrant A5,129,152595,214
Events in quadrant B3,376,960638,582
Events in quadrant C5,452,800599,675
Events in quadrant D3,670,173593,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200633
B0147732
C0211912
D0158892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705979311.233886%
B70591031.459130%
C70594235.992350%
D70591432.025783%

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 7639 7060 545 545 7.13% 7.72%
B 7639 7060 3 3 0.04% 0.04%
C 7639 7060 293 293 3.84% 4.15%
D 7639 7060 60 60 0.79% 0.85%

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 15 239 1994188 12063.76 805 785 165.2
A 15 223 25532 149.76 805 785 165.2
A 0 226 7470 40.46 805 785 165.2
B 4 239 66295 405.7 839 816 161.4
B 10 16 23266 139.1 839 816 161.4
B 12 111 16620 97.92 839 816 161.4
C 1 16 1953823 10446.86 803 806 186.9
C 9 68 362833 1936.51 803 806 186.9
C 13 61 6000 27.78 803 806 186.9
D 1 52 375929 1866.86 815 789 200.9
D 12 233 77503 381.76 815 789 200.9
D 1 20 32843 159.52 815 789 200.9

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