ASTROSAT CZTI

Data Quality Report

Orbit 04735

Creation date: 2024-06-27T14:46:13.146249
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/AS1G05_192T01_9000000594_04735cztM0_level2.evt modeM0/AS1G05_192T01_9000000594_04735cztM0_level2_quad_clean.evt
Size (bytes)607,487,04078,353,280
Size579.3 MB 74.7 MB
Events in quadrant A2,975,822491,746
Events in quadrant B3,491,075498,892
Events in quadrant C5,884,471455,848
Events in quadrant D5,596,878463,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137023
B0150232
C0221042
D0214702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6638150.225972%
B66381592.395300%
C663880712.157276%
D663878811.871045%

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 7663 6639 5 5 0.07% 0.08%
B 7663 6639 110 110 1.44% 1.66%
C 7663 6638 689 689 8.99% 10.38%
D 7663 6639 749 749 9.77% 11.28%

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 15 254 81556 528.53 749 734 152.9
A 12 194 7325 43.1 749 734 152.9
A 0 226 7231 42.49 749 734 152.9
B 10 16 496942 3420.88 758 739 145.1
B 14 167 32297 217.56 758 739 145.1
B 4 80 27987 187.85 758 739 145.1
C 14 48 3162994 19547.21 696 699 161.8
C 13 61 5703 30.93 696 699 161.8
C 12 4 3558 17.67 696 699 161.8
D 13 53 2555626 15309.36 689 670 166.9
D 13 235 214503 1281.29 689 670 166.9
D 13 239 74352 441.5 689 670 166.9

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