ASTROSAT CZTI

Data Quality Report

Orbit 47676

Creation date: 2024-07-22T13:29:02.467655
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/AS1A13_082T01_9000006342_47676cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47676cztM0_level2_quad_clean.evt
Size (bytes)447,880,320107,625,600
Size427.1 MB 102.6 MB
Events in quadrant A6,538,430709,870
Events in quadrant B3,066,849737,427
Events in quadrant C2,931,510710,369
Events in quadrant D3,540,868650,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242911
B0135263
C0133851
D0148801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64611562.414487%
B6461470.727442%
C6461330.510757%
D6461510.789351%

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 7566 6461 39 39 0.52% 0.60%
B 7566 6462 3 3 0.04% 0.05%
C 7566 6462 17 17 0.22% 0.26%
D 7566 6462 29 29 0.38% 0.45%

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 3625574 23553.45 733 717 153.9
A 9 191 78588 505.99 733 717 153.9
A 3 137 8257 48.99 733 717 153.9
B 0 190 90973 625.59 729 705 144.3
B 0 200 47326 323.1 729 705 144.3
B 12 111 18080 120.41 729 705 144.3
C 14 254 99789 579.88 724 726 170.8
C 13 61 4792 23.8 724 726 170.8
C 1 176 3618 16.93 724 726 170.8
D 2 165 409725 2262.44 728 709 180.8
D 2 249 122933 676.07 728 709 180.8
D 7 38 48975 266.98 728 709 180.8

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