ASTROSAT CZTI

Data Quality Report

Orbit 27642

Creation date: 2024-06-27T19:42:29.860588
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_257T01_9000003976_27642cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27642cztM0_level2_quad_clean.evt
Size (bytes)558,259,20083,787,840
Size532.4 MB 79.9 MB
Events in quadrant A3,147,852545,859
Events in quadrant B3,226,957552,798
Events in quadrant C2,961,259526,276
Events in quadrant D7,149,842478,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135170
B0136670
C0128580
D0255260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211751.207535%
B62111211.948156%
C6211961.545645%
D6211103716.696184%

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 7160 6210 9 9 0.13% 0.14%
B 7161 6211 28 28 0.39% 0.45%
C 7160 6210 0 0 0.00% 0.00%
D 7161 6211 1058 1058 14.77% 17.03%

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 6 16 209217 1380.27 754 736 151.0
A 13 248 17792 112.92 754 736 151.0
A 13 254 10572 65.12 754 736 151.0
B 10 245 114181 787.11 751 731 144.1
B 5 255 75094 515.93 751 731 144.1
B 15 32 39575 269.5 751 731 144.1
C 14 238 115785 675.43 724 727 170.3
C 3 233 10274 56.04 724 727 170.3
C 2 16 8050 42.99 724 727 170.3
D 7 80 3165103 18831.84 699 679 168.0
D 1 52 884346 5258.8 699 679 168.0
D 2 250 371578 2207.26 699 679 168.0

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