ASTROSAT CZTI

Data Quality Report

Orbit 29870

Creation date: 2024-06-27T20:08:29.334347
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/AS1A10_083T01_9000004280_29870cztM0_level2.evt modeM0/AS1A10_083T01_9000004280_29870cztM0_level2_quad_clean.evt
Size (bytes)884,085,120147,473,280
Size843.1 MB 140.6 MB
Events in quadrant A4,804,809968,696
Events in quadrant B7,871,365970,478
Events in quadrant C6,764,667912,142
Events in quadrant D6,639,932903,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210613
B0310463
C0268523
D0263733

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10271800.778892%
B102722672.599299%
C102723383.290498%
D102726596.415498%

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 10756 10276 4 4 0.04% 0.04%
B 10757 10277 1 1 0.01% 0.01%
C 10757 10277 9 9 0.08% 0.09%
D 10757 10273 512 512 4.76% 4.98%

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 8 192 23826 91.69 1238 1213 246.6
A 13 254 19113 72.58 1238 1213 246.6
A 3 137 12241 44.71 1238 1213 246.6
B 6 159 3019207 13084.91 1223 1192 230.6
B 12 111 28999 120.56 1223 1192 230.6
B 11 111 26303 108.87 1223 1192 230.6
C 3 233 1932865 6969.24 1184 1191 277.2
C 14 238 192074 688.68 1184 1191 277.2
C 2 114 24628 84.56 1184 1191 277.2
D 13 153 1098061 4116.25 1135 1106 266.5
D 13 104 403324 1509.3 1135 1106 266.5
D 8 195 356275 1332.75 1135 1106 266.5

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