ASTROSAT CZTI

Data Quality Report

Orbit 44762

Creation date: 2024-06-27T23:06:13.026648
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/AS1A13_004T12_9000006020_44762cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44762cztM0_level2_quad_clean.evt
Size (bytes)525,643,20098,328,960
Size501.3 MB 93.8 MB
Events in quadrant A7,328,697599,118
Events in quadrant B3,614,133693,479
Events in quadrant C2,890,433682,106
Events in quadrant D5,152,130577,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263501
B0147731
C0129522
D0195161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6085106817.551356%
B60862383.910615%
C6085540.887428%
D60856089.991783%

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 7230 6086 872 872 12.06% 14.33%
B 7231 6087 143 143 1.98% 2.35%
C 7230 6086 23 23 0.32% 0.38%
D 7230 6086 524 524 7.25% 8.61%

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 15 223 3005855 22459.24 643 631 133.8
A 10 83 1766031 13193.54 643 631 133.8
A 13 248 62148 459.74 643 631 133.8
B 0 189 383861 2912.28 676 658 131.6
B 0 219 284357 2156.07 676 658 131.6
B 5 255 140689 1064.21 676 658 131.6
C 14 254 129837 811.57 679 682 159.1
C 1 3 93841 585.38 679 682 159.1
C 3 233 10004 58.58 679 682 159.1
D 1 52 1047240 6505.16 652 633 160.9
D 13 249 313070 1941.94 652 633 160.9
D 7 38 255605 1584.77 652 633 160.9

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