ASTROSAT CZTI

Data Quality Report

Orbit 15930

Creation date: 2024-06-27T17:15:14.824884
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/AS1A04_104T03_9000002348_15930cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15930cztM0_level2_quad_clean.evt
Size (bytes)111,628,80011,571,840
Size106.5 MB 11.0 MB
Events in quadrant A864,74359,330
Events in quadrant B803,39162,220
Events in quadrant C793,55258,525
Events in quadrant D811,15755,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034892
B032101
C031891
D033271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1541150.973394%
B1541181.168073%
C1541251.622323%
D1541221.427644%

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 1542 1542 0 0 0.00% 0.00%
B 1542 1542 1 1 0.06% 0.06%
C 1542 1542 0 0 0.00% 0.00%
D 1542 1542 16 16 1.04% 1.04%

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 15 239 86940 2036.93 202 197 42.6
A 15 157 1776 37.08 202 197 42.6
A 0 226 1640 33.89 202 197 42.6
B 4 173 5288 124.78 203 197 40.8
B 12 111 4933 116.08 203 197 40.8
B 11 111 4277 100.0 203 197 40.8
C 14 238 30320 639.12 194 194 47.1
C 3 233 5115 104.4 194 194 47.1
C 13 61 1315 23.78 194 194 47.1
D 15 0 48846 1003.24 194 188 48.5
D 2 136 18727 382.24 194 188 48.5
D 2 120 5093 101.13 194 188 48.5

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