ASTROSAT CZTI

Data Quality Report

Orbit 54441

Creation date: 2025-10-21T05:49:04.151848
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/AS1A14_126T19_9000006518_54441cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54441cztM0_level2_quad_clean.evt
Size (bytes)565,323,84096,229,440
Size539.1 MB 91.8 MB
Events in quadrant A3,087,322668,737
Events in quadrant B3,452,168712,394
Events in quadrant C3,743,368636,485
Events in quadrant D10,096,446405,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144282
B0154852
C0163372
D0348632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7035380.540156%
B70351231.748401%
C70351732.459133%
D7035248635.337598%

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 8989 7036 4 4 0.04% 0.06%
B 8989 7036 61 61 0.68% 0.87%
C 8990 7037 102 102 1.13% 1.45%
D 8990 7036 1971 1971 21.92% 28.01%

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 11 3 62050 330.63 750 731 185.5
A 4 3 42484 225.13 750 731 185.5
A 5 241 20067 104.26 750 731 185.5
B 2 249 197010 1241.28 741 714 158.1
B 10 247 162535 1023.28 741 714 158.1
B 0 213 44539 277.13 741 714 158.1
C 13 3 345664 1694.13 731 724 203.6
C 4 5 189646 927.86 731 724 203.6
C 7 220 75036 364.97 731 724 203.6
D 8 176 6363311 40110.56 558 534 158.6
D 7 70 621138 3912.25 558 534 158.6
D 1 3 245839 1546.38 558 534 158.6

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