ASTROSAT CZTI

Data Quality Report

Orbit 11768

Creation date: 2024-06-27T16:18:02.504691
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/AS1A04_231T01_9000001740_11768cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11768cztM0_level2_quad_clean.evt
Size (bytes)526,176,000102,098,880
Size501.8 MB 97.4 MB
Events in quadrant A3,755,757656,506
Events in quadrant B4,183,589678,196
Events in quadrant C3,032,445686,217
Events in quadrant D4,536,474631,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151343
B0165702
C0129942
D0176342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293891.414270%
B62932233.543620%
C6293110.174797%
D62933205.085015%

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 7604 6295 2 2 0.03% 0.03%
B 7604 6295 81 81 1.07% 1.29%
C 7604 6295 0 0 0.00% 0.00%
D 7604 6295 284 284 3.73% 4.51%

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 512546 3301.39 763 746 155.0
A 1 162 115668 741.31 763 746 155.0
A 1 178 64449 410.92 763 746 155.0
B 4 239 414252 2888.88 770 752 143.1
B 15 204 378674 2640.32 770 752 143.1
B 10 16 246461 1716.62 770 752 143.1
C 13 61 5701 27.8 775 781 177.0
C 14 234 4539 21.24 775 781 177.0
C 12 4 3662 16.28 775 781 177.0
D 1 52 1423191 7991.74 751 731 178.0
D 13 104 93838 523.1 751 731 178.0
D 10 199 56409 312.81 751 731 178.0

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