ASTROSAT CZTI

Data Quality Report

Orbit 26628

Creation date: 2024-06-27T19:29:18.449389
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/AS1A09_056T01_9000003824_26628cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26628cztM0_level2_quad_clean.evt
Size (bytes)193,723,20045,181,440
Size184.7 MB 43.1 MB
Events in quadrant A1,182,671308,954
Events in quadrant B1,498,310310,251
Events in quadrant C1,285,352297,109
Events in quadrant D1,740,202283,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B081
C081
D091

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048870
B060090
C051980
D066720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2303421.823708%
B2287823.585483%
C2300813.521739%
D22382149.562109%

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 3261 2354 0 0 0.00% 0.00%
B 3222 2335 10 10 0.31% 0.43%
C 3253 2359 0 0 0.00% 0.00%
D 3235 2307 116 116 3.59% 5.03%

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 6675 99.21 304 297 64.3
A 13 254 4014 57.82 304 297 64.3
A 3 137 2784 38.69 304 297 64.3
B 0 189 249669 4128.07 304 297 60.4
B 10 245 52383 862.22 304 297 60.4
B 12 111 7097 112.57 304 297 60.4
C 3 233 89095 1257.46 293 295 70.6
C 14 238 47089 662.63 293 295 70.6
C 1 0 5748 77.22 293 295 70.6
D 1 52 467926 6755.17 275 267 69.2
D 7 80 198536 2863.93 275 267 69.2
D 2 250 16516 234.71 275 267 69.2

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