ASTROSAT CZTI

Data Quality Report

Orbit 23646

Creation date: 2024-06-27T18:57:09.032515
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/AS1A07_147T01_9000003490_23646cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23646cztM0_level2_quad_clean.evt
Size (bytes)812,753,280149,785,920
Size775.1 MB 142.8 MB
Events in quadrant A5,143,371965,008
Events in quadrant B7,433,523944,764
Events in quadrant C5,300,982944,494
Events in quadrant D6,000,463929,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222
B0221
C0211
D0222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023311
B023410
C023511
D023412

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235951166
B0305791499
C0238591191
D0264871249

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108781331.222651%
B108718147.487812%
C108672111.941658%
D108672171.996871%

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 28949 10907 0 0 0.00% 0.00%
B 28948 10895 459 459 1.59% 4.21%
C 28948 10899 4 4 0.01% 0.04%
D 28948 10893 73 73 0.25% 0.67%

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 13 254 18707 64.14 1333 1303 271.3
A 3 137 12358 40.74 1333 1303 271.3
A 0 226 11409 37.24 1333 1303 271.3
B 3 64 2024712 8119.6 1295 1262 249.2
B 5 172 108283 429.45 1295 1262 249.2
B 0 229 71928 283.56 1295 1262 249.2
C 14 238 200006 656.86 1287 1297 302.5
C 7 247 31165 98.73 1287 1297 302.5
C 10 91 20894 64.78 1287 1297 302.5
D 1 52 387398 1230.12 1299 1264 313.9
D 9 85 298638 947.35 1299 1264 313.9
D 7 238 180978 572.52 1299 1264 313.9

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