ASTROSAT CZTI

Data Quality Report

Orbit 14974

Creation date: 2024-06-27T17:02:00.995069
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/AS1T02_056T01_9000002210_14974cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14974cztM0_level2_quad_clean.evt
Size (bytes)776,033,280135,452,160
Size740.1 MB 129.2 MB
Events in quadrant A5,649,874851,624
Events in quadrant B6,388,869841,712
Events in quadrant C5,155,450838,134
Events in quadrant D5,563,499809,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240641
B0262631
C0225101
D0243971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10994650.591232%
B109942902.637802%
C10994230.209205%
D109941881.710024%

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 11565 10996 1 1 0.01% 0.01%
B 11565 10996 150 150 1.30% 1.36%
C 11565 10996 2 2 0.02% 0.02%
D 11565 10996 173 173 1.50% 1.57%

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 1 162 213549 807.97 1288 1258 262.7
A 12 189 166276 628.05 1288 1258 262.7
A 1 178 104660 393.54 1288 1258 262.7
B 3 64 542017 2234.15 1273 1241 242.1
B 0 219 259538 1067.12 1273 1241 242.1
B 4 173 161164 660.7 1273 1241 242.1
C 3 233 260200 897.52 1246 1250 288.5
C 14 234 25625 84.48 1246 1250 288.5
C 13 61 8871 26.41 1246 1250 288.5
D 15 0 372306 1120.74 1234 1207 331.1
D 7 38 266686 801.76 1234 1207 331.1
D 13 249 103636 309.34 1234 1207 331.1

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