ASTROSAT CZTI

Data Quality Report

Orbit 19896

Creation date: 2024-06-27T18:08:26.539400
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_118T01_9000002962_19896cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19896cztM0_level2_quad_clean.evt
Size (bytes)1,402,038,720222,920,640
Size1.3 GB 212.6 MB
Events in quadrant A9,397,8741,413,710
Events in quadrant B9,130,8171,424,978
Events in quadrant C8,976,4491,365,950
Events in quadrant D13,705,3461,271,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398663
B0386453
C0382313
D0528183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185094352.350208%
B185094022.171916%
C185103391.831442%
D1850917449.422443%

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 20239 18509 139 139 0.69% 0.75%
B 20239 18509 102 102 0.50% 0.55%
C 20240 18510 0 0 0.00% 0.00%
D 20239 18509 1476 1476 7.29% 7.97%

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 5 16 790812 1750.81 2236 2186 450.4
A 0 226 18865 37.03 2236 2186 450.4
A 3 137 18823 36.93 2236 2186 450.4
B 3 64 152488 353.88 2222 2158 424.8
B 7 220 149685 347.28 2222 2158 424.8
B 12 111 52994 119.67 2222 2158 424.8
C 14 238 331789 652.77 2157 2171 505.0
C 9 221 154506 301.68 2157 2171 505.0
C 3 9 81406 156.92 2157 2171 505.0
D 1 52 4223466 8356.47 2093 2037 505.2
D 1 20 807328 1594.1 2093 2037 505.2
D 5 222 495065 975.97 2093 2037 505.2

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