ASTROSAT CZTI

Data Quality Report

Orbit 21754

Creation date: 2024-06-27T18:31:49.753505
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/AS1A07_005T01_9000003224_21754cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21754cztM0_level2_quad_clean.evt
Size (bytes)672,543,36084,064,320
Size641.4 MB 80.2 MB
Events in quadrant A3,325,214552,517
Events in quadrant B3,694,717564,129
Events in quadrant C3,329,241529,024
Events in quadrant D9,602,582470,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138582
B0151172
C0138053
D0327732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6159841.363858%
B61591322.143205%
C61581181.916207%
D6158236438.389087%

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 7429 6159 0 0 0.00% 0.00%
B 7429 6159 16 16 0.22% 0.26%
C 7428 6159 1 1 0.01% 0.02%
D 7428 6159 1869 1869 25.16% 30.35%

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 24944 141.04 855 841 170.9
A 13 254 11238 60.84 855 841 170.9
A 0 226 7591 39.5 855 841 170.9
B 3 64 93498 574.14 858 840 161.4
B 0 230 78321 480.1 858 840 161.4
B 5 172 54270 331.07 858 840 161.4
C 14 238 131500 688.93 818 824 189.7
C 13 61 5901 26.77 818 824 189.7
C 8 128 3314 13.13 818 824 189.7
D 7 238 4783625 28174.36 701 683 169.8
D 7 38 984192 5793.45 701 683 169.8
D 1 52 563704 3316.53 701 683 169.8

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