ASTROSAT CZTI

Data Quality Report

Orbit 12637

Creation date: 2024-06-27T16:30:20.431636
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/AS1G08_071T01_9000001874_12637cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12637cztM0_level2_quad_clean.evt
Size (bytes)489,245,760101,318,400
Size466.6 MB 96.6 MB
Events in quadrant A2,949,576663,656
Events in quadrant B4,153,200659,043
Events in quadrant C3,117,207678,725
Events in quadrant D4,178,874636,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130223
B0164672
C0134412
D0168092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163220.356969%
B61633876.279409%
C6163801.298069%
D61631312.125588%

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 7489 6164 2 2 0.03% 0.03%
B 7489 6165 246 246 3.28% 3.99%
C 7489 6165 44 44 0.59% 0.71%
D 7489 6164 53 53 0.71% 0.86%

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 8 15 65147 430.35 745 729 149.7
A 8 192 9823 60.75 745 729 149.7
A 0 226 6572 39.04 745 729 149.7
B 4 239 867528 6255.02 735 718 138.6
B 3 64 209658 1507.74 735 718 138.6
B 4 81 86114 616.23 735 718 138.6
C 15 208 189873 1120.53 739 745 168.8
C 7 238 25482 146.56 739 745 168.8
C 14 234 13179 73.67 739 745 168.8
D 10 157 1116612 6363.07 723 701 175.4
D 1 52 154800 878.69 723 701 175.4
D 13 104 65089 367.15 723 701 175.4

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