ASTROSAT CZTI

Data Quality Report

Orbit 20180319_A04_103T01_9000001988_level2

Creation date: 2025-11-20T07:36:15.463776
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/AS1A04_103T01_9000001988cztM0_level2.fits modeM0/AS1A04_103T01_9000001988cztM0_level2_quad_clean.evt
Size (bytes)6,582,816,0006,744,297,600
Size6.1 GB 6.3 GB
Events in quadrant A40,509,35641,361,294
Events in quadrant B38,987,13041,568,989
Events in quadrant C39,559,34739,328,872
Events in quadrant D33,234,73034,952,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014294840
B015116730
C014373090
D017760660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140440
B0140240
C0140280
D0140360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010910
B010870
C010890
D010880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68718263810.928575%
B687115146472.131666%
C68720654380.791320%
D687184332044.831894%

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 800542 687985 0 0 0.00% 0.00%
B 800542 687606 0 0 0.00% 0.00%
C 800542 688013 0 0 0.00% 0.00%
D 800542 686576 0 0 0.00% 0.00%

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 0 29 38776 11.14 10543 9877 2594.0
A 7 110 32612 8.76 10543 9877 2594.0
A 9 19 29505 7.57 10543 9877 2594.0
B 2 9 32816 11.58 10286 9799 1987.2
B 3 17 26311 8.31 10286 9799 1987.2
B 14 254 25581 7.94 10286 9799 1987.2
C 1 80 29906 7.52 10450 9719 2685.1
C 1 81 29525 7.38 10450 9719 2685.1
C 12 241 27546 6.64 10450 9719 2685.1
D 6 231 24448 6.32 9499 8637 2503.4
D 7 3 23092 5.77 9499 8637 2503.4
D 7 5 23008 5.74 9499 8637 2503.4

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