ASTROSAT CZTI

Data Quality Report

Orbit 04773

Creation date: 2024-06-27T14:46:47.084650
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/AS1G05_218T05_9000000602_04773cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04773cztM0_level2_quad_clean.evt
Size (bytes)1,433,128,320190,687,680
Size1.3 GB 181.9 MB
Events in quadrant A7,106,3001,241,516
Events in quadrant B7,892,9211,225,583
Events in quadrant C17,347,8851,058,982
Events in quadrant D9,998,9561,167,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321423
B0339192
C0624562
D04079810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156482131.361196%
B156482001.278119%
C15648380724.328988%
D156474963.169937%

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 31748 15649 5 5 0.02% 0.03%
B 31748 15651 15 15 0.05% 0.10%
C 31747 15649 2936 2936 9.25% 18.76%
D 31748 15649 244 244 0.77% 1.56%

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 8 15 54775 146.51 1795 1755 361.9
A 0 149 50344 134.27 1795 1755 361.9
A 14 111 23507 60.11 1795 1755 361.9
B 4 80 388133 1123.97 1800 1754 343.8
B 14 167 279496 807.95 1800 1754 343.8
B 8 3 94117 268.68 1800 1754 343.8
C 14 48 11173732 30975.47 1557 1563 360.7
C 1 16 77717 211.14 1557 1563 360.7
C 12 4 13290 32.51 1557 1563 360.7
D 11 132 1267311 3027.84 1732 1678 418.0
D 13 235 1010799 2414.17 1732 1678 418.0
D 2 136 396343 944.18 1732 1678 418.0

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