ASTROSAT CZTI

Data Quality Report

Orbit 21135

Creation date: 2024-06-27T18:23:59.780423
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/AS1T03_136T01_9000003124_21135cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21135cztM0_level2_quad_clean.evt
Size (bytes)258,036,48047,376,000
Size246.1 MB 45.2 MB
Events in quadrant A1,465,123313,977
Events in quadrant B1,803,991317,259
Events in quadrant C1,472,461308,259
Events in quadrant D2,869,443282,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06248113
B07416115
C06260122
D010796250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0644
C0642
D0642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298440.134048%
B2985521.742044%
C2978230.772330%
D29591886.353498%

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 4074 3030 0 0 0.00% 0.00%
B 4074 3032 15 15 0.37% 0.49%
C 4073 3018 0 0 0.00% 0.00%
D 4073 3017 119 119 2.92% 3.94%

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 0 226 3311 37.32 380 371 78.8
A 3 137 3115 34.84 380 371 78.8
A 13 254 2752 30.23 380 371 78.8
B 7 220 209109 2803.83 379 370 74.4
B 0 219 23739 313.9 379 370 74.4
B 0 190 20405 269.11 379 370 74.4
C 14 238 56917 660.47 361 364 85.6
C 0 10 5590 61.03 361 364 85.6
C 13 61 2553 25.56 361 364 85.6
D 1 52 1059487 11881.16 357 345 89.1
D 1 239 218954 2452.29 357 345 89.1
D 1 20 97812 1093.35 357 345 89.1

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