ASTROSAT CZTI

Data Quality Report

Orbit 30908

Creation date: 2024-06-27T20:21:02.306108
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/AS1C06_004T01_9000004466_30908cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30908cztM0_level2_quad_clean.evt
Size (bytes)974,557,440150,183,360
Size929.4 MB 143.2 MB
Events in quadrant A5,452,409981,206
Events in quadrant B9,223,433963,956
Events in quadrant C5,946,356901,659
Events in quadrant D8,140,586930,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246991210
B0373842057
C0261321332
D0334771558

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101
B090
C0112
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02408
B024212
C02419
D024014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111501941.739910%
B110663973.587566%
C11127113910.236362%
D111046315.682637%

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 12657 11277 12 12 0.09% 0.11%
B 12657 11178 10 10 0.08% 0.09%
C 12657 11258 12 12 0.09% 0.11%
D 12657 11225 414 414 3.27% 3.69%

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 0 13 183825 665.95 1364 1334 274.0
A 13 254 20559 70.16 1364 1334 274.0
A 3 137 13655 44.96 1364 1334 274.0
B 6 159 3114591 12280.6 1333 1302 253.5
B 6 36 385609 1515.93 1333 1302 253.5
B 0 190 329218 1293.49 1333 1302 253.5
C 14 238 476677 1649.96 1242 1247 288.1
C 14 254 380896 1317.55 1242 1247 288.1
C 3 233 108002 370.49 1242 1247 288.1
D 8 195 1339104 4443.49 1285 1254 301.1
D 12 218 774484 2568.18 1285 1254 301.1
D 2 250 447275 1481.4 1285 1254 301.1

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