ASTROSAT CZTI

Data Quality Report

Orbit 46517

Creation date: 2024-06-27T23:24:07.472546
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_068T07_9000006222_46517cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46517cztM0_level2_quad_clean.evt
Size (bytes)437,601,600105,157,440
Size417.3 MB 100.3 MB
Events in quadrant A5,882,404697,902
Events in quadrant B3,164,057732,254
Events in quadrant C2,997,840701,858
Events in quadrant D3,682,635627,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216941
B0132721
C0130801
D0150631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60761582.600395%
B6076881.448321%
C6075400.658436%
D60761322.172482%

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 7281 6077 21 21 0.29% 0.35%
B 7281 6077 14 14 0.19% 0.23%
C 7280 6076 30 30 0.41% 0.49%
D 7281 6077 111 111 1.52% 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 3032291 20674.07 709 695 146.6
A 9 191 47486 319.09 709 695 146.6
A 0 243 16184 105.63 709 695 146.6
B 3 112 107585 763.52 715 696 140.0
B 5 172 57468 405.53 715 696 140.0
B 0 190 53477 377.02 715 696 140.0
C 14 254 254269 1555.97 695 699 163.0
C 3 233 18335 108.22 695 699 163.0
C 9 54 9496 53.98 695 699 163.0
D 1 52 345610 2018.49 686 667 170.9
D 2 249 223558 1304.28 686 667 170.9
D 13 249 194906 1136.62 686 667 170.9

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