ASTROSAT CZTI

Data Quality Report

Orbit 20439

Creation date: 2024-06-27T18:15:26.664158
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_188T01_9000003018_20439cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20439cztM0_level2_quad_clean.evt
Size (bytes)463,481,28071,735,040
Size442.0 MB 68.4 MB
Events in quadrant A3,234,423441,555
Events in quadrant B3,555,903451,090
Events in quadrant C3,364,967428,828
Events in quadrant D3,459,086416,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131242
B0141773
C0133422
D0139322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222530.851816%
B6221781.253818%
C6221671.076997%
D62211111.784279%

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 7587 6223 0 0 0.00% 0.00%
B 7586 6222 2 2 0.03% 0.03%
C 7586 6222 3 3 0.04% 0.05%
D 7586 6221 75 75 0.99% 1.21%

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 0 226 7378 39.81 840 826 164.6
A 3 137 6336 33.48 840 826 164.6
A 12 194 6031 31.62 840 826 164.6
B 10 245 239839 1554.33 838 820 153.8
B 12 111 18487 114.89 838 820 153.8
B 11 111 16520 102.1 838 820 153.8
C 14 238 131245 709.14 806 813 183.9
C 3 247 56424 302.35 806 813 183.9
C 3 233 25480 134.11 806 813 183.9
D 13 153 231804 1203.09 808 785 192.0
D 1 52 148349 768.47 808 785 192.0
D 2 234 26164 132.17 808 785 192.0

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