ASTROSAT CZTI

Data Quality Report

Orbit 34590

Creation date: 2022-02-20T08:08:39.399451
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/AS1C07_014T01_9000004950_34590cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34590cztM0_level2_quad_clean.evt
Size (bytes)1,167,580,800133,614,720
Size1.1 GB 127.4 MB
Events in quadrant A5,640,695841,087
Events in quadrant B8,222,816826,110
Events in quadrant C6,266,297837,905
Events in quadrant D14,430,873719,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244123
B0321632
C0255942
D0511682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11867160.134828%
B118676955.856577%
C11867250.210668%
D11867168314.182186%

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 14614 11869 0 0 0.00% 0.00%
B 14614 11869 439 439 3.00% 3.70%
C 14614 11869 17 17 0.12% 0.14%
D 14614 11868 1377 1377 9.42% 11.60%

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 56483 190.98 1431 1406 288.4
A 9 143 29011 95.72 1431 1406 288.4
A 13 254 21211 68.67 1431 1406 288.4
B 5 172 2206997 8151.4 1393 1353 270.6
B 0 189 268249 986.37 1393 1353 270.6
B 5 255 68005 246.33 1393 1353 270.6
C 15 214 488198 1503.05 1390 1402 323.9
C 0 207 167395 512.53 1390 1402 323.9
C 14 67 120000 366.19 1390 1402 323.9
D 8 195 5992607 16696.38 1308 1286 358.8
D 1 52 915268 2547.05 1308 1286 358.8
D 5 223 802730 2233.43 1308 1286 358.8

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