ASTROSAT CZTI

Data Quality Report

Orbit 20181221_A05_196T01_9000002584_level2

Creation date: 2018-12-22T10:54:24.861352
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_196T01_9000002584cztM0_level2_bc.evt modeM0/AS1A05_196T01_9000002584cztM0_level2_quad_clean.evt
Size (bytes)1,117,869,120268,594,560
Size1.0 GB 256.2 MB
Events in quadrant A5,274,8501,738,593
Events in quadrant B5,269,2331,750,998
Events in quadrant C4,773,4031,674,607
Events in quadrant D17,081,4121,502,571

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471110
B0469800
C0457740
D0870050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213166433.016513%
B213165012.350347%
C213165132.406643%
D21316477522.401013%

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 26026 21313 34 34 0.13% 0.16%
B 26026 21314 0 0 0.00% 0.00%
C 26026 21314 0 0 0.00% 0.00%
D 26026 21314 2443 2443 9.39% 11.46%

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 15 174 353257 1341.75 1232 1212 262.4
A 0 23 146774 554.78 1232 1212 262.4
A 4 2 21824 78.56 1232 1212 262.4
B 0 189 125389 550.23 1239 1217 225.7
B 0 197 88356 386.13 1239 1217 225.7
B 10 16 62732 272.58 1239 1217 225.7
C 5 218 106320 382.69 1184 1180 274.7
C 7 220 66853 239.04 1184 1180 274.7
C 3 233 23556 81.44 1184 1180 274.7
D 11 176 9975226 39295.18 1103 1068 253.8
D 7 238 1160519 4567.89 1103 1068 253.8
D 10 70 1063505 4185.68 1103 1068 253.8

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