ASTROSAT CZTI

Data Quality Report

Orbit 32948

Creation date: 2024-06-27T20:43:46.868648
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/AS1C07_005T01_9000004748_32948cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32948cztM0_level2_quad_clean.evt
Size (bytes)502,318,080100,549,440
Size479.0 MB 95.9 MB
Events in quadrant A2,499,207690,827
Events in quadrant B3,437,528695,602
Events in quadrant C2,550,957698,742
Events in quadrant D6,367,430590,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B0136612
C0110162
D0225732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5271220.417378%
B52712985.653576%
C5271270.512237%
D5271101219.199393%

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 7242 5272 12 12 0.17% 0.23%
B 7242 5272 179 179 2.47% 3.40%
C 7242 5272 23 23 0.32% 0.44%
D 7242 5272 842 842 11.63% 15.97%

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 0 191 72595 587.63 612 601 122.5
A 0 253 24842 197.86 612 601 122.5
A 14 238 10467 80.53 612 601 122.5
B 5 172 869798 7697.19 606 591 112.9
B 0 219 46250 404.33 606 591 112.9
B 0 189 36022 313.76 606 591 112.9
C 0 10 118913 853.56 606 610 138.6
C 3 233 23276 163.54 606 610 138.6
C 14 67 16007 111.09 606 610 138.6
D 12 218 1401081 9753.71 551 538 143.6
D 7 80 975786 6791.85 551 538 143.6
D 8 195 710811 4946.51 551 538 143.6

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