ASTROSAT CZTI

Data Quality Report

Orbit 40986

Creation date: 2024-06-27T22:23:01.699122
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/AS1A12_066T01_9000005584_40986cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40986cztM0_level2_quad_clean.evt
Size (bytes)349,496,640100,483,200
Size333.3 MB 95.8 MB
Events in quadrant A3,309,317677,970
Events in quadrant B2,689,295687,476
Events in quadrant C3,011,283652,191
Events in quadrant D3,455,025601,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136293
B0123072
C0126992
D0145832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065110.181369%
B6065110.181369%
C6065380.626546%
D60651131.863149%

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 9411 6067 4 4 0.04% 0.07%
B 9411 6067 2 2 0.02% 0.03%
C 9411 6067 35 35 0.37% 0.58%
D 9411 6067 111 111 1.18% 1.83%

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 10 83 534494 3841.65 675 662 139.0
A 12 189 157884 1131.43 675 662 139.0
A 13 254 9299 62.15 675 662 139.0
B 5 255 27281 203.0 669 649 131.2
B 0 186 23934 177.49 669 649 131.2
B 12 111 16812 123.2 669 649 131.2
C 15 214 257453 1660.39 659 662 154.7
C 0 10 135840 874.05 659 662 154.7
C 14 254 38260 243.11 659 662 154.7
D 13 249 699090 4315.28 656 638 161.9
D 13 171 69682 426.58 656 638 161.9
D 1 47 52309 319.24 656 638 161.9

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