ASTROSAT CZTI

Data Quality Report

Orbit 25437

Creation date: 2024-06-27T19:17:39.860689
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/AS1A09_085T02_9000003716_25437cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25437cztM0_level2_quad_clean.evt
Size (bytes)409,743,36067,970,880
Size390.8 MB 64.8 MB
Events in quadrant A2,571,459436,638
Events in quadrant B2,570,124437,916
Events in quadrant C2,589,617417,672
Events in quadrant D4,324,177401,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107830
B0108590
C0110220
D0164440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5212581.112817%
B5212881.688411%
C5212891.707598%
D52123085.909440%

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 5442 5214 0 0 0.00% 0.00%
B 5442 5212 0 0 0.00% 0.00%
C 5442 5213 3 3 0.06% 0.06%
D 5442 5213 252 252 4.63% 4.83%

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 6 16 37093 274.11 657 643 133.0
A 13 254 8197 56.81 657 643 133.0
A 3 137 6099 41.03 657 643 133.0
B 12 111 15611 120.22 647 630 124.6
B 11 111 14135 108.37 647 630 124.6
B 14 111 12528 95.48 647 630 124.6
C 14 238 100717 679.02 622 624 147.4
C 5 112 45176 302.24 622 624 147.4
C 8 128 7222 44.76 622 624 147.4
D 7 238 895756 5821.63 626 608 153.8
D 8 195 466188 3027.92 626 608 153.8
D 1 52 401573 2607.69 626 608 153.8

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