ASTROSAT CZTI

Data Quality Report

Orbit 28741

Creation date: 2024-06-27T19:55:40.974346
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/AS1A10_123T08_9000004126_28741cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28741cztM0_level2_quad_clean.evt
Size (bytes)786,559,680134,703,360
Size750.1 MB 128.5 MB
Events in quadrant A4,561,043869,829
Events in quadrant B4,871,407878,861
Events in quadrant C6,893,895842,783
Events in quadrant D6,858,481836,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200132
B0206652
C0269802
D0269542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94061631.732936%
B94061441.530938%
C94065385.719753%
D94066957.388901%

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 10451 9407 71 71 0.68% 0.75%
B 10451 9406 33 33 0.32% 0.35%
C 10451 9406 23 23 0.22% 0.24%
D 10451 9407 514 514 4.92% 5.46%

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 6 16 194134 859.52 1114 1090 224.6
A 14 239 34510 148.8 1114 1090 224.6
A 15 174 22319 94.52 1114 1090 224.6
B 5 255 274338 1299.86 1102 1072 210.2
B 10 245 180440 853.21 1102 1072 210.2
B 12 111 26098 119.04 1102 1072 210.2
C 3 233 2503077 10355.72 1048 1053 241.6
C 14 238 220482 908.2 1048 1053 241.6
C 14 254 77577 316.73 1048 1053 241.6
D 8 195 1588256 6401.18 1049 1021 248.0
D 1 52 960589 3869.85 1049 1021 248.0
D 12 233 159773 640.23 1049 1021 248.0

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