ASTROSAT CZTI

Data Quality Report

Orbit 15837

Creation date: 2024-06-27T17:14:12.013898
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/AS1A04_143T01_9000002344_15837cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15837cztM0_level2_quad_clean.evt
Size (bytes)1,016,052,480173,064,960
Size969.0 MB 165.0 MB
Events in quadrant A8,630,1281,066,769
Events in quadrant B7,537,2071,114,446
Events in quadrant C6,849,4591,061,907
Events in quadrant D6,816,9221,041,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345994
B0312483
C0290243
D0295723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138596474.668446%
B138593732.691392%
C138591631.176131%
D13859510.367992%

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 17375 13863 395 395 2.27% 2.85%
B 17375 13863 109 109 0.63% 0.79%
C 17375 13863 0 0 0.00% 0.00%
D 17375 13863 8 8 0.05% 0.06%

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 15 239 1716300 4958.53 1718 1681 345.8
A 14 239 183174 524.86 1718 1681 345.8
A 15 157 107494 306.0 1718 1681 345.8
B 10 245 397220 1208.1 1739 1698 327.4
B 4 173 131282 395.81 1739 1698 327.4
B 4 48 57311 169.87 1739 1698 327.4
C 14 238 257270 655.54 1676 1690 389.9
C 3 233 27832 67.05 1676 1690 389.9
C 10 22 17348 40.16 1676 1690 389.9
D 1 52 253040 554.06 1690 1654 453.7
D 10 70 72525 156.2 1690 1654 453.7
D 2 234 52158 111.31 1690 1654 453.7

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