ASTROSAT CZTI

Data Quality Report

Orbit 44837

Creation date: 2024-06-27T23:07:03.526321
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_017T01_9000006028_44837cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44837cztM0_level2_quad_clean.evt
Size (bytes)507,061,440103,714,560
Size483.6 MB 98.9 MB
Events in quadrant A4,639,416709,534
Events in quadrant B3,570,533730,483
Events in quadrant C2,999,756705,487
Events in quadrant D7,095,670576,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187371
B0146741
C0128801
D0252891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59911462.436989%
B59921692.820427%
C5992701.168224%
D599282513.768358%

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 7216 5992 5 5 0.07% 0.08%
B 7217 5993 51 51 0.71% 0.85%
C 7217 5993 18 18 0.25% 0.30%
D 7217 5993 732 732 10.14% 12.21%

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 1896289 13018.78 706 691 145.6
A 0 243 8220 51.71 706 691 145.6
A 13 254 7872 49.32 706 691 145.6
B 4 171 380333 2770.27 705 685 137.0
B 5 255 117923 855.48 705 685 137.0
B 5 172 55537 400.25 705 685 137.0
C 12 2 104561 633.26 701 707 164.0
C 14 254 89004 538.4 701 707 164.0
C 12 250 31574 188.21 701 707 164.0
D 11 241 1364239 8194.8 662 639 166.4
D 13 187 1295909 7784.16 662 639 166.4
D 1 52 1017433 6110.61 662 639 166.4

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