ASTROSAT CZTI

Data Quality Report

Orbit 30971

Creation date: 2024-06-27T20:21:47.169425
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/AS1A10_071T42_9000004476_30971cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30971cztM0_level2_quad_clean.evt
Size (bytes)149,276,16031,167,360
Size142.4 MB 29.7 MB
Events in quadrant A920,755211,249
Events in quadrant B1,416,153212,057
Events in quadrant C1,016,540199,246
Events in quadrant D1,051,898198,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037011
B052521
C040461
D042511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1671663.949731%
B16711156.882107%
C16711187.061640%
D1671633.770197%

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 2541 1671 0 0 0.00% 0.00%
B 2541 1671 2 2 0.08% 0.12%
C 2541 1671 5 5 0.20% 0.30%
D 2541 1671 5 5 0.20% 0.30%

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 13 254 2766 50.69 238 232 50.0
A 3 137 2426 43.89 238 232 50.0
A 0 226 2054 36.45 238 232 50.0
B 6 159 452328 9529.9 231 225 47.4
B 0 190 13772 285.56 231 225 47.4
B 15 201 11878 245.63 231 225 47.4
C 0 10 95443 1741.82 223 223 54.7
C 14 238 35755 649.97 223 223 54.7
C 4 175 4450 77.32 223 223 54.7
D 8 195 109754 1873.47 233 226 58.5
D 2 250 31961 542.83 233 226 58.5
D 2 234 9150 152.64 233 226 58.5

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