ASTROSAT CZTI

Data Quality Report

Orbit 18723

Creation date: 2024-06-27T17:53:58.370781
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/AS1T03_091T01_9000002798_18723cztM0_level2.evt modeM0/AS1T03_091T01_9000002798_18723cztM0_level2_quad_clean.evt
Size (bytes)817,004,160142,395,840
Size779.2 MB 135.8 MB
Events in quadrant A5,062,738904,575
Events in quadrant B7,539,651904,228
Events in quadrant C5,537,427872,574
Events in quadrant D5,850,040861,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225482
B0296942
C0238772
D0254972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11126480.431422%
B111276465.805698%
C111271000.898715%
D111271541.384021%

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 12076 11128 1 1 0.01% 0.01%
B 12077 11129 423 423 3.50% 3.80%
C 12077 11129 0 0 0.00% 0.00%
D 12077 11129 73 73 0.60% 0.66%

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 17238 60.87 1305 1277 262.2
A 0 13 11872 40.41 1305 1277 262.2
A 15 192 11787 40.08 1305 1277 262.2
B 10 245 2482219 10226.88 1274 1240 242.6
B 12 111 30047 118.75 1274 1240 242.6
B 11 111 25702 100.84 1274 1240 242.6
C 3 233 461141 1574.56 1248 1253 292.1
C 14 238 193010 656.54 1248 1253 292.1
C 8 128 12611 38.89 1248 1253 292.1
D 1 52 668632 2190.83 1259 1221 304.6
D 14 34 191098 623.29 1259 1221 304.6
D 7 238 141545 460.63 1259 1221 304.6

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