ASTROSAT CZTI

Data Quality Report

Orbit 11169

Creation date: 2024-06-27T16:09:16.987356
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_042T01_9000001630_11169cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11169cztM0_level2_quad_clean.evt
Size (bytes)540,109,44066,415,680
Size515.1 MB 63.3 MB
Events in quadrant A5,466,910366,972
Events in quadrant B3,637,525429,536
Events in quadrant C2,509,450428,568
Events in quadrant D4,362,129391,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01226
B012210
C01204
D01206

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212061194
B015283751
C011970567
D0183031478

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561589015.850401%
B56362223.938964%
C564380.141769%
D56151352.404274%

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 6756 5645 587 587 8.69% 10.40%
B 6786 5665 129 129 1.90% 2.28%
C 6790 5668 0 0 0.00% 0.00%
D 6772 5645 119 119 1.76% 2.11%

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 14 238 1690286 13706.31 602 589 123.3
A 8 15 1082800 8778.57 602 589 123.3
A 8 5 332760 2694.47 602 589 123.3
B 4 239 695737 5609.32 653 639 123.9
B 15 204 107079 858.95 653 639 123.9
B 11 51 91840 735.98 653 639 123.9
C 8 128 7698 47.05 639 643 150.0
C 13 61 4862 28.14 639 643 150.0
C 8 112 4739 27.32 639 643 150.0
D 10 157 1170532 7637.21 625 607 153.2
D 8 195 318211 2073.3 625 607 153.2
D 1 52 304508 1983.85 625 607 153.2

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