ASTROSAT CZTI

Data Quality Report

Orbit 53532

Creation date: 2025-08-21T02:07:49.485704
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_004T05_9000006502_53532cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53532cztM0_level2_quad_clean.evt
Size (bytes)677,666,880102,980,160
Size646.3 MB 98.2 MB
Events in quadrant A4,680,673709,161
Events in quadrant B4,735,507749,601
Events in quadrant C8,460,536550,135
Events in quadrant D6,639,305597,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190443
B0190094
C0303243
D0247923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73472162.939976%
B73462373.226246%
C7347162722.145093%
D734780310.929631%

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 7442 7350 112 112 1.50% 1.52%
B 7441 7349 94 94 1.26% 1.28%
C 7442 7350 1332 1332 17.90% 18.12%
D 7442 7350 712 712 9.57% 9.69%

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 3 62 455007 2265.84 809 789 200.5
A 0 8 357518 1779.52 809 789 200.5
A 3 63 304665 1515.87 809 789 200.5
B 10 254 332100 1918.29 796 767 172.7
B 4 81 278637 1608.76 796 767 172.7
B 10 28 236872 1366.96 796 767 172.7
C 15 224 4487556 22912.38 708 699 195.8
C 4 5 333246 1698.17 708 699 195.8
C 12 249 214701 1092.81 708 699 195.8
D 7 70 1421395 6556.3 762 727 216.7
D 6 239 787008 3628.64 762 727 216.7
D 3 12 439410 2024.5 762 727 216.7

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