ASTROSAT CZTI

Data Quality Report

Orbit 34407

Creation date: 2022-02-07T21:50:12.476247
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/AS1A05_103T01_9000004912_34407cztM0_level2.evt modeM0/AS1A05_103T01_9000004912_34407cztM0_level2_quad_clean.evt
Size (bytes)526,026,24070,012,800
Size501.7 MB 66.8 MB
Events in quadrant A2,627,989451,862
Events in quadrant B3,475,625458,095
Events in quadrant C2,990,335454,612
Events in quadrant D6,500,652406,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109413
B0134962
C0120392
D0228102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4962120.241838%
B49622885.804111%
C4962751.511487%
D4962113822.934301%

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 6994 4963 0 0 0.00% 0.00%
B 6994 4963 162 162 2.32% 3.26%
C 6994 4963 50 50 0.71% 1.01%
D 6994 4963 980 980 14.01% 19.75%

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 10 83 35515 263.6 666 656 132.2
A 13 6 13721 98.8 666 656 132.2
A 13 254 9019 63.24 666 656 132.2
B 5 172 741447 6055.58 652 638 122.3
B 0 229 75004 607.89 652 638 122.3
B 0 190 73732 597.49 652 638 122.3
C 15 214 204948 1360.81 656 665 150.1
C 0 10 163951 1087.71 656 665 150.1
C 15 159 23911 154.85 656 665 150.1
D 2 249 1555789 9813.19 587 579 158.5
D 8 195 788231 4969.99 587 579 158.5
D 7 223 614605 3874.43 587 579 158.5

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