ASTROSAT CZTI

Data Quality Report

Orbit 17009

Creation date: 2024-06-27T17:31:01.866507
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/AS1A05_225T02_9000002526_17009cztM0_level2.evt modeM0/AS1A05_225T02_9000002526_17009cztM0_level2_quad_clean.evt
Size (bytes)767,364,480202,423,680
Size731.8 MB 193.0 MB
Events in quadrant A4,894,4371,390,922
Events in quadrant B5,251,2831,405,644
Events in quadrant C5,612,2311,334,126
Events in quadrant D6,788,2991,291,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211612
B0221352
C0233562
D0270964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10249910.887892%
B102491401.365987%
C102491531.492829%
D102483463.376269%

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 12670 10251 13 13 0.10% 0.13%
B 12670 10252 11 11 0.09% 0.11%
C 12670 10252 2 2 0.02% 0.02%
D 12670 10252 257 257 2.03% 2.51%

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 97933 392.63 1245 1221 246.3
A 12 189 11227 40.62 1245 1221 246.3
A 0 226 10970 39.58 1245 1221 246.3
B 0 197 68938 294.01 1240 1210 230.4
B 0 189 58774 249.88 1240 1210 230.4
B 0 244 44609 188.39 1240 1210 230.4
C 3 233 777356 2865.96 1178 1183 270.8
C 14 238 188153 690.37 1178 1183 270.8
C 9 54 31372 111.47 1178 1183 270.8
D 1 52 2169486 7630.05 1189 1156 284.2
D 12 110 58307 201.11 1189 1156 284.2
D 2 234 44006 150.78 1189 1156 284.2

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