ASTROSAT CZTI

Data Quality Report

Orbit 36696

Creation date: 2024-06-27T21:30:24.572578
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/AS1C07_001T09_9000005236_36696cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36696cztM0_level2_quad_clean.evt
Size (bytes)357,664,32094,305,600
Size341.1 MB 89.9 MB
Events in quadrant A2,351,836646,534
Events in quadrant B2,553,402651,376
Events in quadrant C2,831,504632,154
Events in quadrant D2,779,158599,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096342
B0103391
C0110701
D0112041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A463820.043122%
B4638701.509271%
C46381122.414834%
D46381282.759810%

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 6791 4639 0 0 0.00% 0.00%
B 6791 4639 48 48 0.71% 1.03%
C 6791 4639 95 95 1.40% 2.05%
D 6791 4639 105 105 1.55% 2.26%

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 162144 1445.63 558 548 111.8
A 9 143 20127 175.15 558 548 111.8
A 13 6 10486 88.9 558 548 111.8
B 5 255 280244 2697.3 550 536 103.7
B 0 221 19806 185.83 550 536 103.7
B 0 190 19711 184.91 550 536 103.7
C 0 10 366263 2999.78 531 536 121.9
C 15 214 211375 1729.35 531 536 121.9
C 14 254 149255 1219.83 531 536 121.9
D 13 171 213953 1657.71 534 522 128.8
D 10 253 97627 754.21 534 522 128.8
D 12 233 83301 642.94 534 522 128.8

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