ASTROSAT CZTI

Data Quality Report

Orbit 21401

Creation date: 2024-06-27T18:27:23.455030
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_140T01_9000003160_21401cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21401cztM0_level2_quad_clean.evt
Size (bytes)962,766,720137,436,480
Size918.2 MB 131.1 MB
Events in quadrant A5,183,176877,758
Events in quadrant B5,318,893889,127
Events in quadrant C7,380,282853,674
Events in quadrant D10,519,496766,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226921
B0229881
C0291471
D0390591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11185370.330800%
B11186530.473807%
C111862121.895226%
D11186122710.969068%

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 11769 11185 0 0 0.00% 0.00%
B 11770 11186 8 8 0.07% 0.07%
C 11770 11185 36 36 0.31% 0.32%
D 11770 11186 1161 1161 9.86% 10.38%

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 66883 246.97 1323 1297 265.6
A 13 254 18847 66.09 1323 1297 265.6
A 0 226 11446 38.22 1323 1297 265.6
B 0 230 48644 186.94 1319 1286 253.3
B 12 111 30421 115.0 1319 1286 253.3
B 3 64 27548 103.66 1319 1286 253.3
C 3 233 2208199 7470.18 1259 1268 295.4
C 14 238 196174 659.73 1259 1268 295.4
C 7 220 53233 175.89 1259 1268 295.4
D 12 235 3235433 10867.48 1226 1192 297.6
D 1 20 884360 2967.56 1226 1192 297.6
D 1 52 827563 2776.72 1226 1192 297.6

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