ASTROSAT CZTI

Data Quality Report

Orbit 26197

Creation date: 2024-06-27T19:25:59.251841
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/AS1C05_007T01_9000003786_26197cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26197cztM0_level2_quad_clean.evt
Size (bytes)468,429,12073,103,040
Size446.7 MB 69.7 MB
Events in quadrant A3,194,808459,742
Events in quadrant B3,213,596468,364
Events in quadrant C3,734,683428,120
Events in quadrant D3,623,932426,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130720
B0131460
C0149300
D0147560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174340.550696%
B6175410.663968%
C61741592.575316%
D61741211.959832%

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 7369 6175 2 2 0.03% 0.03%
B 7370 6176 0 0 0.00% 0.00%
C 7369 6175 51 51 0.69% 0.83%
D 7369 6175 101 101 1.37% 1.64%

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 0 13 32664 194.74 821 808 163.6
A 13 254 9580 53.62 821 808 163.6
A 0 226 7162 38.84 821 808 163.6
B 12 111 18221 111.91 820 801 155.7
B 11 111 16371 100.03 820 801 155.7
B 14 111 15009 91.28 820 801 155.7
C 2 16 519480 2894.37 773 779 179.2
C 14 238 125168 694.09 773 779 179.2
C 3 233 76412 422.03 773 779 179.2
D 1 52 622627 3362.06 773 757 185.0
D 12 233 39892 211.58 773 757 185.0
D 2 234 26317 138.19 773 757 185.0

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