ASTROSAT CZTI

Data Quality Report

Orbit 37504

Creation date: 2024-06-27T21:40:51.841140
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/AS1A11_030T02_9000005328_37504cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37504cztM0_level2_quad_clean.evt
Size (bytes)459,777,60078,940,800
Size438.5 MB 75.3 MB
Events in quadrant A2,783,278521,456
Events in quadrant B3,225,658518,327
Events in quadrant C3,024,310512,347
Events in quadrant D4,540,812476,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114565
B0128468
C0121014
D01703842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168200.386997%
B51661873.619822%
C5167781.509580%
D51592114.089940%

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 7052 5170 8 8 0.11% 0.15%
B 7052 5169 148 148 2.10% 2.86%
C 7052 5170 65 65 0.92% 1.26%
D 7052 5167 193 193 2.74% 3.74%

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 294031 2336.18 621 610 125.6
A 6 10 35615 278.71 621 610 125.6
A 15 222 30630 239.02 621 610 125.6
B 5 172 388026 3314.04 612 595 116.9
B 5 255 237843 2029.39 612 595 116.9
B 0 190 45974 388.17 612 595 116.9
C 14 254 314867 2215.03 608 613 141.9
C 15 214 221204 1554.84 608 613 141.9
C 0 10 87745 614.15 608 613 141.9
D 1 52 1479813 10079.61 595 578 146.8
D 13 249 412680 2808.09 595 578 146.8
D 2 153 128062 868.68 595 578 146.8

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