ASTROSAT CZTI

Data Quality Report

Orbit 36125

Creation date: 2022-08-10T16:56:31.314586
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/AS1T04_069T01_9000005158_36125cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36125cztM0_level2_quad_clean.evt
Size (bytes)475,418,88070,557,120
Size453.4 MB 67.3 MB
Events in quadrant A2,966,250459,098
Events in quadrant B4,005,766429,416
Events in quadrant C2,814,305442,666
Events in quadrant D4,228,521410,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124793
B0156872
C0119822
D0163242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5648591.044618%
B56484127.294618%
C5648260.460340%
D56483967.011331%

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 7232 5649 34 34 0.47% 0.60%
B 7232 5649 303 303 4.19% 5.36%
C 7232 5649 21 21 0.29% 0.37%
D 7232 5649 345 345 4.77% 6.11%

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 10 83 190571 1436.32 648 635 132.2
A 9 143 184337 1389.18 648 635 132.2
A 15 223 46339 345.62 648 635 132.2
B 5 172 1216084 10040.51 622 605 121.1
B 0 190 117346 964.34 622 605 121.1
B 5 255 110015 903.79 622 605 121.1
C 15 214 238262 1639.63 619 625 144.9
C 0 10 128683 883.57 619 625 144.9
C 0 207 13993 92.24 619 625 144.9
D 1 52 568776 3809.13 603 584 149.2
D 2 249 418171 2799.49 603 584 149.2
D 12 17 318354 2130.32 603 584 149.2

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