ASTROSAT CZTI

Data Quality Report

Orbit 36732

Creation date: 2024-06-27T21:30:54.986596
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/AS1A11_101T01_9000005238_36732cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36732cztM0_level2_quad_clean.evt
Size (bytes)888,935,040132,048,000
Size847.8 MB 125.9 MB
Events in quadrant A5,220,031837,321
Events in quadrant B5,708,007841,651
Events in quadrant C8,610,487789,744
Events in quadrant D6,650,673779,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225214
B0237803
C0324983
D0269723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10838240.221443%
B10838440.405979%
C108389028.322569%
D108383593.312419%

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 14924 10841 2 2 0.01% 0.02%
B 14924 10840 21 21 0.14% 0.19%
C 14924 10841 662 662 4.44% 6.11%
D 14924 10841 308 308 2.06% 2.84%

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 407503 1637.45 1228 1204 248.1
A 13 6 31583 122.43 1228 1204 248.1
A 13 254 19274 72.82 1228 1204 248.1
B 0 213 214737 903.05 1223 1193 236.5
B 0 189 177385 745.1 1223 1193 236.5
B 5 255 127465 533.99 1223 1193 236.5
C 14 254 3068877 11408.7 1152 1159 268.9
C 0 10 524342 1945.69 1152 1159 268.9
C 15 214 440721 1634.71 1152 1159 268.9
D 13 171 926400 3188.83 1180 1148 290.2
D 12 17 368912 1267.48 1180 1148 290.2
D 13 249 261949 898.84 1180 1148 290.2

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