ASTROSAT CZTI

Data Quality Report

Orbit 11444

Creation date: 2024-06-27T16:12:51.144325
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_021T02_9000001676_11444cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11444cztM0_level2_quad_clean.evt
Size (bytes)501,860,16071,369,280
Size478.6 MB 68.1 MB
Events in quadrant A3,788,609413,368
Events in quadrant B4,431,675408,354
Events in quadrant C3,109,770450,620
Events in quadrant D3,411,518419,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155193
B0174382
C0137472
D0147302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67361592.360451%
B67363505.195962%
C6736440.653207%
D6736821.217340%

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 7707 6738 43 43 0.56% 0.64%
B 7707 6738 142 142 1.84% 2.11%
C 7707 6738 0 0 0.00% 0.00%
D 7707 6738 31 31 0.40% 0.46%

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 9 143 181141 1088.07 808 788 165.8
A 1 162 163825 983.6 808 788 165.8
A 1 178 109825 657.82 808 788 165.8
B 4 239 1104650 7197.39 802 781 153.4
B 0 219 60677 390.53 802 781 153.4
B 15 204 50408 323.58 802 781 153.4
C 13 61 5820 27.16 797 802 184.8
C 12 4 2752 10.55 797 802 184.8
C 14 234 2286 8.03 797 802 184.8
D 2 120 131318 692.58 788 767 188.5
D 13 104 65031 340.92 788 767 188.5
D 10 253 61582 322.63 788 767 188.5

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