ASTROSAT CZTI

Data Quality Report

Orbit 09685

Creation date: 2024-06-27T15:49:23.100041
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/AS1A02_198T01_9000001376_09685cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09685cztM0_level2_quad_clean.evt
Size (bytes)387,688,32086,532,480
Size369.7 MB 82.5 MB
Events in quadrant A2,692,498560,302
Events in quadrant B2,777,894561,694
Events in quadrant C2,672,403559,734
Events in quadrant D3,212,970543,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161
B0161
C0162
D0172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013420
B013412
C013422
D013422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136422008
B0138672111
C0138222045
D0153712266

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668841.482004%
B5630891.580817%
C5662601.059696%
D56271001.777146%

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 7659 6075 0 0 0.00% 0.00%
B 7659 6051 0 0 0.00% 0.00%
C 7659 6097 0 0 0.00% 0.00%
D 7657 6032 18 18 0.24% 0.30%

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 13 252 20784 143.56 690 675 140.1
A 15 174 8999 59.42 690 675 140.1
A 0 226 6401 40.88 690 675 140.1
B 10 245 30102 226.36 682 667 130.0
B 0 187 24700 184.82 682 667 130.0
B 0 229 20549 152.9 682 667 130.0
C 9 68 61936 397.93 667 672 154.0
C 14 67 8587 51.41 667 672 154.0
C 13 61 5067 28.55 667 672 154.0
D 8 195 341396 2119.3 661 644 160.8
D 1 52 180481 1118.49 661 644 160.8
D 7 46 81544 503.16 661 644 160.8

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