ASTROSAT CZTI

Data Quality Report

Orbit 27086

Creation date: 2024-06-27T19:36:22.135572
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/AS1T03_231T01_9000003910_27086cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27086cztM0_level2_quad_clean.evt
Size (bytes)479,917,44068,575,680
Size457.7 MB 65.4 MB
Events in quadrant A3,680,895423,477
Events in quadrant B3,917,210423,747
Events in quadrant C2,906,484419,590
Events in quadrant D3,631,715399,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145990
B0155650
C0122140
D0148240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58641873.188950%
B58642464.195089%
C58631141.944397%
D58631522.592529%

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 6284 5865 47 47 0.75% 0.80%
B 6284 5865 69 69 1.10% 1.18%
C 6283 5864 0 0 0.00% 0.00%
D 6283 5864 85 85 1.35% 1.45%

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 14 235 811119 5431.76 730 714 149.2
A 8 192 28670 187.37 730 714 149.2
A 12 189 17235 110.73 730 714 149.2
B 0 189 625624 4430.17 725 705 141.1
B 3 112 258133 1824.96 725 705 141.1
B 7 205 148413 1047.13 725 705 141.1
C 14 238 112729 661.33 710 716 169.4
C 15 208 13972 78.26 710 716 169.4
C 4 224 7550 40.35 710 716 169.4
D 1 52 568272 3361.73 707 688 168.8
D 2 250 202355 1194.45 707 688 168.8
D 13 168 94239 554.09 707 688 168.8

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