ASTROSAT CZTI

Data Quality Report

Orbit 21211

Creation date: 2024-06-27T18:25:00.347526
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/AS1A06_002T01_9000003134_21211cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21211cztM0_level2_quad_clean.evt
Size (bytes)1,007,916,48070,525,440
Size961.2 MB 67.3 MB
Events in quadrant A15,934,783316,351
Events in quadrant B3,570,005474,486
Events in quadrant C3,532,513458,929
Events in quadrant D6,991,661372,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523302
B0153421
C0152121
D0257841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7350568577.346939%
B73511021.387566%
C73511061.441981%
D7351124216.895660%

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 7710 7350 5354 5354 69.44% 72.84%
B 7711 7352 9 9 0.12% 0.12%
C 7711 7352 8 8 0.10% 0.11%
D 7711 7351 945 945 12.26% 12.86%

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 15 236 13204109 93260.7 697 681 141.6
A 5 16 25295 173.86 697 681 141.6
A 11 47 16318 110.45 697 681 141.6
B 0 182 55681 325.9 873 850 168.2
B 3 64 40360 234.84 873 850 168.2
B 0 190 28534 164.55 873 850 168.2
C 14 238 130716 655.54 839 844 198.1
C 0 239 80851 403.84 839 844 198.1
C 3 233 49525 245.72 839 844 198.1
D 7 238 2791006 14730.77 771 749 189.4
D 1 52 665036 3507.01 771 749 189.4
D 13 174 433675 2285.57 771 749 189.4

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