ASTROSAT CZTI

Data Quality Report

Orbit 26127

Creation date: 2024-06-27T19:25:07.889065
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/AS1A09_138T04_9000003776_26127cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26127cztM0_level2_quad_clean.evt
Size (bytes)77,584,32025,830,720
Size74.0 MB 24.6 MB
Events in quadrant A565,254174,330
Events in quadrant B559,414180,531
Events in quadrant C602,917173,716
Events in quadrant D543,958169,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113993318187293646
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022970
B022820
C024290
D022380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103800.000000%
B103200.000000%
C1041131.248799%
D102500.000000%

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 7915 1324 0 0 0.00% 0.00%
B 7915 1326 0 0 0.00% 0.00%
C 7915 1354 0 0 0.00% 0.00%
D 7915 1319 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 13 10281 334.56 143 142 30.3
A 13 254 1399 41.48 143 142 30.3
A 6 16 1349 39.83 143 142 30.3
B 12 111 2926 97.7 143 139 28.5
B 11 111 2727 90.72 143 139 28.5
B 14 111 2512 83.18 143 139 28.5
C 14 238 23623 671.38 142 144 35.0
C 3 233 15518 439.62 142 144 35.0
C 2 16 7327 205.4 142 144 35.0
D 12 233 7823 221.94 141 137 34.6
D 2 234 3543 98.35 141 137 34.6
D 1 52 2985 82.24 141 137 34.6

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