ASTROSAT CZTI

Data Quality Report

Orbit 51626

Creation date: 2025-04-15T12:40:50.247463
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_037T05_9000006460_51626cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51626cztM0_level2_quad_clean.evt
Size (bytes)503,743,68096,575,040
Size480.4 MB 92.1 MB
Events in quadrant A4,466,181626,953
Events in quadrant B5,211,482647,289
Events in quadrant C3,731,179625,730
Events in quadrant D4,728,368567,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175901
B0198041
C0155461
D0184791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65614116.264289%
B656268810.484608%
C65622073.154526%
D65624356.629077%

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 7646 6563 234 234 3.06% 3.57%
B 7647 6564 511 511 6.68% 7.78%
C 7647 6564 64 64 0.84% 0.98%
D 7647 6564 369 369 4.83% 5.62%

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 7 64 993491 5604.72 731 714 177.1
A 12 3 155729 875.13 731 714 177.1
A 5 240 89246 499.8 731 714 177.1
B 10 44 1080155 7040.86 717 692 153.3
B 5 172 395926 2577.94 717 692 153.3
B 0 171 124011 804.36 717 692 153.3
C 13 3 287159 1435.58 724 718 199.5
C 15 189 168907 842.93 724 718 199.5
C 9 38 87151 433.18 724 718 199.5
D 8 176 1009768 5121.1 709 682 197.0
D 3 12 291169 1474.22 709 682 197.0
D 6 42 212479 1074.87 709 682 197.0

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