ASTROSAT CZTI

Data Quality Report

Orbit 11655

Creation date: 2024-06-27T16:16:32.253431
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/AS1A04_037T02_9000001718_11655cztM0_level2.evt modeM0/AS1A04_037T02_9000001718_11655cztM0_level2_quad_clean.evt
Size (bytes)374,837,76046,241,280
Size357.5 MB 44.1 MB
Events in quadrant A3,687,546274,168
Events in quadrant B2,113,862287,831
Events in quadrant C1,975,534281,581
Events in quadrant D3,294,435265,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137312
B088481
C085921
D0125401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A412164215.578743%
B4121972.353798%
C4121360.873574%
D412147911.623392%

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 4512 4123 316 316 7.00% 7.66%
B 4512 4123 8 8 0.18% 0.19%
C 4512 4123 0 0 0.00% 0.00%
D 4512 4123 291 291 6.45% 7.06%

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 5 1557629 15880.26 475 464 98.1
A 1 162 111911 1136.55 475 464 98.1
A 1 178 65060 658.76 475 464 98.1
B 4 239 86868 861.93 512 497 100.2
B 15 204 24252 237.06 512 497 100.2
B 12 111 11883 113.63 512 497 100.2
C 8 128 4562 34.22 504 505 118.6
C 13 61 3783 27.65 504 505 118.6
C 1 3 2570 17.42 504 505 118.6
D 13 104 1289895 10957.91 483 466 117.7
D 1 52 64278 542.29 483 466 117.7
D 8 195 48685 409.78 483 466 117.7

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