ASTROSAT CZTI

Data Quality Report

Orbit 44752

Creation date: 2024-06-27T23:06:05.403809
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/AS1A13_004T11_9000006018_44752cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44752cztM0_level2_quad_clean.evt
Size (bytes)827,948,160171,613,440
Size789.6 MB 163.7 MB
Events in quadrant A10,196,1851,102,254
Events in quadrant B5,919,1641,179,252
Events in quadrant C5,603,7311,161,773
Events in quadrant D8,086,501999,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389452
B0251302
C0246113
D0317532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108808718.005515%
B108813072.821432%
C108801741.599265%
D108808517.821691%

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 12780 10882 490 490 3.83% 4.50%
B 12781 10882 108 108 0.85% 0.99%
C 12780 10882 130 130 1.02% 1.19%
D 12780 10882 721 721 5.64% 6.63%

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 3115247 12724.48 1182 1153 244.7
A 15 223 2174727 8881.43 1182 1153 244.7
A 13 248 233689 950.16 1182 1153 244.7
B 0 189 738826 3158.84 1198 1162 233.5
B 5 255 166908 709.76 1198 1162 233.5
B 0 219 47471 198.31 1198 1162 233.5
C 1 3 472143 1699.01 1182 1187 277.2
C 14 254 460318 1656.35 1182 1187 277.2
C 12 2 42748 149.93 1182 1187 277.2
D 5 235 1106416 3952.12 1140 1107 279.7
D 13 249 1021723 3649.29 1140 1107 279.7
D 2 249 370523 1320.88 1140 1107 279.7

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