ASTROSAT CZTI

Data Quality Report

Orbit 39623

Creation date: 2024-06-27T22:06:57.374645
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/AS1A12_018T01_9000005488_39623cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39623cztM0_level2_quad_clean.evt
Size (bytes)386,985,60083,030,400
Size369.1 MB 79.2 MB
Events in quadrant A2,596,874572,272
Events in quadrant B2,284,019585,264
Events in quadrant C5,347,000508,438
Events in quadrant D3,706,771496,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109783
B0105162
C0193952
D0146102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5016130.259171%
B5016250.498405%
C501666513.257576%
D50163476.917863%

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 6989 5017 5 5 0.07% 0.10%
B 6989 5017 9 9 0.13% 0.18%
C 6989 5017 618 618 8.84% 12.32%
D 6989 5017 298 298 4.26% 5.94%

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 413910 3784.5 537 525 109.2
A 15 222 91656 834.3 537 525 109.2
A 13 254 8670 74.57 537 525 109.2
B 5 255 87347 839.24 537 522 103.5
B 5 172 82767 794.97 537 522 103.5
B 12 111 12720 117.9 537 522 103.5
C 9 187 1985097 16893.71 504 508 117.5
C 15 208 1146665 9756.6 504 508 117.5
C 15 214 201203 1708.41 504 508 117.5
D 13 249 684376 5518.48 508 494 123.9
D 12 227 562943 4538.6 508 494 123.9
D 2 153 161306 1297.65 508 494 123.9

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