ASTROSAT CZTI

Data Quality Report

Orbit 21142

Creation date: 2024-06-27T18:24:04.689215
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/AS1T03_136T01_9000003124_21142cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21142cztM0_level2_quad_clean.evt
Size (bytes)742,674,24079,986,240
Size708.3 MB 76.3 MB
Events in quadrant A2,735,346569,017
Events in quadrant B3,134,141573,525
Events in quadrant C2,725,845554,065
Events in quadrant D13,508,020322,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119803
B0131294
C0119075
D0440007

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736490.854254%
B5737641.115566%
C5736761.324965%
D5737493385.985707%

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 6701 5736 0 0 0.00% 0.00%
B 6702 5737 16 16 0.24% 0.28%
C 6701 5736 0 0 0.00% 0.00%
D 6701 5736 4531 4531 67.62% 78.99%

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 6 8974 58.1 706 692 142.5
A 13 254 8273 53.19 706 692 142.5
A 0 226 6254 39.02 706 692 142.5
B 7 220 88995 649.59 701 683 136.0
B 0 190 81616 595.31 701 683 136.0
B 0 189 51114 370.95 701 683 136.0
C 14 238 105722 667.45 671 675 157.4
C 13 61 4659 25.31 671 675 157.4
C 3 233 2535 11.82 671 675 157.4
D 1 239 10242383 87903.53 474 459 116.5
D 9 65 805494 6909.39 474 459 116.5
D 1 52 439721 3770.06 474 459 116.5

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