ASTROSAT CZTI

Data Quality Report

Orbit 35497

Creation date: 2022-04-22T13:50:15.895197
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_097T22_9000005082_35497cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35497cztM0_level2_quad_clean.evt
Size (bytes)379,630,08067,757,760
Size362.0 MB 64.6 MB
Events in quadrant A2,478,047417,179
Events in quadrant B2,965,320429,178
Events in quadrant C2,936,210431,560
Events in quadrant D2,762,325408,154

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107532
B0121461
C0119021
D0116391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522150.095767%
B52211322.528251%
C5221711.359893%
D5221561.072591%

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 6864 5222 0 0 0.00% 0.00%
B 6864 5222 69 69 1.01% 1.32%
C 6864 5222 55 55 0.80% 1.05%
D 6864 5222 46 46 0.67% 0.88%

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 99515 817.01 593 581 121.1
A 7 3 52354 427.55 593 581 121.1
A 15 169 31117 252.17 593 581 121.1
B 5 172 256719 2273.42 587 570 112.7
B 4 232 176122 1558.09 587 570 112.7
B 5 236 161532 1428.6 587 570 112.7
C 0 207 271428 2020.0 578 581 134.1
C 15 214 215248 1601.0 578 581 134.1
C 0 10 151753 1127.45 578 581 134.1
D 7 223 151390 1081.99 578 563 139.4
D 8 195 98392 701.79 578 563 139.4
D 7 80 97174 693.06 578 563 139.4

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