ASTROSAT CZTI

Data Quality Report

Orbit 15266

Creation date: 2024-06-27T17:06:04.712088
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_207T01_9000002254_15266cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15266cztM0_level2_quad_clean.evt
Size (bytes)417,913,92095,457,600
Size398.6 MB 91.0 MB
Events in quadrant A2,862,536629,324
Events in quadrant B3,066,802635,107
Events in quadrant C3,376,127624,696
Events in quadrant D2,961,207600,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123142
B0129091
C0138571
D0127351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5734430.749913%
B5734430.749913%
C5734250.435996%
D5734711.238228%

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 6845 5735 1 1 0.01% 0.02%
B 6845 5736 2 2 0.03% 0.03%
C 6845 5736 0 0 0.00% 0.00%
D 6845 5735 38 38 0.56% 0.66%

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 9 143 51925 356.15 710 695 143.8
A 12 189 47954 328.54 710 695 143.8
A 13 248 22773 153.48 710 695 143.8
B 0 219 63233 464.44 707 690 134.7
B 0 197 55843 409.56 707 690 134.7
B 0 205 44534 325.58 707 690 134.7
C 3 233 644753 4107.66 680 682 156.8
C 3 9 79007 499.53 680 682 156.8
C 13 61 4772 26.08 680 682 156.8
D 2 33 163546 972.41 684 663 167.5
D 13 172 70456 416.66 684 663 167.5
D 7 38 65933 389.66 684 663 167.5

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