ASTROSAT CZTI

Data Quality Report

Orbit 35980

Creation date: 2022-07-18T23:52:54.891776
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_050T19_9000005156_35980cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35980cztM0_level2_quad_clean.evt
Size (bytes)1,513,192,320161,916,480
Size1.4 GB 154.4 MB
Events in quadrant A4,895,9461,296,549
Events in quadrant B27,264,840433,374
Events in quadrant C6,603,5941,231,202
Events in quadrant D6,353,8831,208,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215344
B0882873
C0260993
D0258953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10519170.161612%
B105191047099.534176%
C105195004.753304%
D105192632.500238%

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 13506 10521 0 0 0.00% 0.00%
B 13505 10518 10153 10153 75.18% 96.53%
C 13506 10520 396 396 2.93% 3.76%
D 13506 10521 190 190 1.41% 1.81%

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 279764 1171.22 1187 1163 237.9
A 13 254 12860 49.17 1187 1163 237.9
A 3 137 12467 47.52 1187 1163 237.9
B 5 31 12465855 140307.46 462 449 88.8
B 5 15 9404024 105844.26 462 449 88.8
B 5 14 2638955 29698.35 462 449 88.8
C 9 187 1402447 5372.15 1127 1135 260.8
C 15 214 430886 1647.52 1127 1135 260.8
C 0 10 245119 935.35 1127 1135 260.8
D 13 249 593823 2160.59 1142 1112 274.3
D 8 195 378272 1374.85 1142 1112 274.3
D 10 118 255533 927.43 1142 1112 274.3

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