ASTROSAT CZTI

Data Quality Report

Orbit 34234

Creation date: 2022-07-16T13:14:07.819873
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/AS1A11_059T09_9000004888_34234cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34234cztM0_level2_quad_clean.evt
Size (bytes)65,381,76015,024,960
Size62.4 MB 14.3 MB
Events in quadrant A366,905100,652
Events in quadrant B395,569104,491
Events in quadrant C600,98098,577
Events in quadrant D567,29695,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014522
B015481
C022451
D021801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67710.147710%
B67791.329394%
C6777410.930576%
D67720.295421%

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 677 677 0 0 0.00% 0.00%
B 676 676 1 1 0.15% 0.15%
C 677 677 59 59 8.71% 8.71%
D 677 677 1 1 0.15% 0.15%

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 9527 478.57 91 89 19.7
A 15 169 3417 168.75 91 89 19.7
A 13 254 1249 58.82 91 89 19.7
B 5 172 26044 1323.57 91 89 19.6
B 0 189 2097 102.4 91 89 19.6
B 12 111 1969 95.87 91 89 19.6
C 0 10 191631 8803.41 86 86 21.8
C 14 254 31984 1466.03 86 86 21.8
C 15 214 31913 1462.77 86 86 21.8
D 8 195 185393 7685.4 89 86 24.1
D 7 223 15664 646.08 89 86 24.1
D 2 120 10634 437.47 89 86 24.1

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