ASTROSAT CZTI

Data Quality Report

Orbit 07261

Creation date: 2024-06-27T15:17:40.183871
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/AS1A02_155T01_9000000994_07261cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07261cztM0_level2_quad_clean.evt
Size (bytes)856,488,960163,419,840
Size816.8 MB 155.8 MB
Events in quadrant A5,993,6211,018,551
Events in quadrant B6,575,5571,033,750
Events in quadrant C6,226,7651,017,899
Events in quadrant D6,262,258980,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267654
B0283613
C0274053
D0280773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130061591.222513%
B130062431.868368%
C130061471.130248%
D130062011.545441%

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 15641 13006 0 0 0.00% 0.00%
B 15641 13006 54 54 0.35% 0.42%
C 15641 13006 17 17 0.11% 0.13%
D 15641 13006 73 73 0.47% 0.56%

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 67413 211.72 1532 1495 311.3
A 0 226 15151 43.86 1532 1495 311.3
A 12 194 13719 39.26 1532 1495 311.3
B 4 81 201698 677.5 1544 1507 295.5
B 4 239 156889 525.85 1544 1507 295.5
B 0 214 136651 457.36 1544 1507 295.5
C 7 247 328845 944.08 1496 1500 346.7
C 9 68 61952 174.35 1496 1500 346.7
C 13 61 11582 29.08 1496 1500 346.7
D 2 14 405669 1116.25 1488 1444 362.1
D 2 33 92108 250.37 1488 1444 362.1
D 14 34 65086 175.75 1488 1444 362.1

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