ASTROSAT CZTI

Data Quality Report

Orbit 21373

Creation date: 2024-06-27T18:27:01.575276
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/AS1C04_001T01_9000003156_21373cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21373cztM0_level2_quad_clean.evt
Size (bytes)853,830,720165,945,600
Size814.3 MB 158.3 MB
Events in quadrant A5,647,6741,070,968
Events in quadrant B5,862,0331,082,473
Events in quadrant C5,522,4911,031,018
Events in quadrant D8,011,3811,009,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245812
B0252722
C0244803
D0322622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12032690.573471%
B120321251.038896%
C120311060.881057%
D120313933.266561%

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 13567 12032 0 0 0.00% 0.00%
B 13567 12032 29 29 0.21% 0.24%
C 13566 12031 0 0 0.00% 0.00%
D 13566 12031 303 303 2.23% 2.52%

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 5 168 136490 479.55 1412 1382 281.7
A 15 174 29826 100.96 1412 1382 281.7
A 12 96 26269 88.33 1412 1382 281.7
B 3 64 152744 569.23 1407 1370 265.9
B 0 230 73704 272.01 1407 1370 265.9
B 0 190 52765 193.27 1407 1370 265.9
C 14 238 209223 656.57 1351 1358 316.6
C 3 233 44220 135.39 1351 1358 316.6
C 13 61 9511 25.75 1351 1358 316.6
D 1 52 2282308 6980.84 1356 1316 326.8
D 12 235 156068 473.61 1356 1316 326.8
D 13 153 130041 393.95 1356 1316 326.8

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