ASTROSAT CZTI

Data Quality Report

Orbit 32794

Creation date: 2024-06-27T20:42:05.725081
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/AS1T04_064T01_9000004730_32794cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32794cztM0_level2_quad_clean.evt
Size (bytes)1,125,835,200120,726,720
Size1.0 GB 115.1 MB
Events in quadrant A7,051,184718,104
Events in quadrant B6,185,359773,842
Events in quadrant C5,693,547767,150
Events in quadrant D14,458,179667,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279443
B0250812
C0238082
D0504052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105247286.917522%
B105242302.185481%
C105241281.216268%
D10524154114.642721%

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 13300 10526 463 463 3.48% 4.40%
B 13300 10526 116 116 0.87% 1.10%
C 13300 10526 85 85 0.64% 0.81%
D 13300 10526 1572 1572 11.82% 14.93%

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 15 237 2193893 9162.67 1188 1164 239.3
A 14 63 75224 309.47 1188 1164 239.3
A 12 16 54791 224.09 1188 1164 239.3
B 0 219 454672 1918.89 1237 1209 236.3
B 5 172 429567 1812.65 1237 1209 236.3
B 0 230 172337 724.15 1237 1209 236.3
C 0 10 596882 2143.46 1194 1206 277.9
C 3 233 159482 569.53 1194 1206 277.9
C 0 207 77599 274.89 1194 1206 277.9
D 8 195 4828161 16404.42 1135 1108 294.3
D 10 203 1309167 4445.35 1135 1108 294.3
D 12 6 1031487 3501.68 1135 1108 294.3

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