ASTROSAT CZTI

Data Quality Report

Orbit 50508

Creation date: 2025-01-29T10:42:37.969035
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/AS1T05_239T01_9000006444_50508cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50508cztM0_level2_quad_clean.evt
Size (bytes)793,307,52084,931,200
Size756.6 MB 81.0 MB
Events in quadrant A6,455,501549,238
Events in quadrant B4,081,486698,642
Events in quadrant C12,601,121298,225
Events in quadrant D5,719,115566,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236505
B0166442
C0419632
D0215732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569111717.004110%
B65692503.805754%
C6569386858.882631%
D65694176.347998%

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 7739 6568 1055 1055 13.63% 16.06%
B 7740 6569 113 113 1.46% 1.72%
C 7739 6568 3637 3637 47.00% 55.37%
D 7740 6569 344 344 4.44% 5.24%

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 10 253 2700053 16441.73 661 646 164.2
A 10 251 232403 1411.6 661 646 164.2
A 12 250 191409 1161.91 661 646 164.2
B 1 238 405135 2638.08 719 694 153.3
B 4 170 328181 2136.12 719 694 153.3
B 5 79 109993 712.93 719 694 153.3
C 12 249 5334096 38269.99 498 494 139.4
C 15 235 1726821 12386.85 498 494 139.4
C 15 196 1031203 7395.61 498 494 139.4
D 7 77 955688 5058.88 683 657 188.8
D 2 165 515215 2725.66 683 657 188.8
D 7 96 300417 1587.85 683 657 188.8

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