ASTROSAT CZTI

Data Quality Report

Orbit 37818

Creation date: 2024-06-27T21:44:52.192491
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/AS1T05_054T01_9000005350_37818cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37818cztM0_level2_quad_clean.evt
Size (bytes)886,968,000125,821,440
Size845.9 MB 120.0 MB
Events in quadrant A5,635,283775,895
Events in quadrant B7,280,489763,423
Events in quadrant C5,605,877783,682
Events in quadrant D7,605,886734,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231554
B0288493
C0231593
D0299973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10864340.312960%
B108644624.252577%
C10864410.377393%
D108645935.458395%

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 14893 10867 20 20 0.13% 0.18%
B 14893 10867 336 336 2.26% 3.09%
C 14893 10867 40 40 0.27% 0.37%
D 14892 10866 392 392 2.63% 3.61%

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 635276 2554.28 1227 1203 248.2
A 9 143 111262 443.36 1227 1203 248.2
A 7 16 58025 228.9 1227 1203 248.2
B 4 171 1625307 7118.3 1202 1170 228.2
B 5 172 444281 1942.08 1202 1170 228.2
B 0 189 185820 809.29 1202 1170 228.2
C 15 214 490691 1757.78 1192 1198 278.5
C 0 10 175086 624.43 1192 1198 278.5
C 14 254 107493 381.71 1192 1198 278.5
D 2 249 874317 3058.22 1175 1145 285.5
D 13 249 602337 2105.63 1175 1145 285.5
D 10 204 390856 1364.93 1175 1145 285.5

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