ASTROSAT CZTI

Data Quality Report

Orbit 33121

Creation date: 2024-06-27T20:45:13.242659
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_046T06_9000004764_33121cztM0_level2.evt modeM0/AS1A11_046T06_9000004764_33121cztM0_level2_quad_clean.evt
Size (bytes)491,725,44072,573,120
Size468.9 MB 69.2 MB
Events in quadrant A2,423,522483,038
Events in quadrant B3,005,996484,272
Events in quadrant C2,844,750460,468
Events in quadrant D6,264,705404,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105233
B0121822
C0118182
D0221962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520750.096025%
B5207881.690033%
C5207751.440369%
D520780515.459958%

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 7300 5208 1 1 0.01% 0.02%
B 7300 5208 70 70 0.96% 1.34%
C 7300 5208 61 61 0.84% 1.17%
D 7300 5208 867 867 11.88% 16.65%

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 13 6 11622 88.52 621 612 124.4
A 7 16 10323 78.07 621 612 124.4
A 13 254 9890 74.59 621 612 124.4
B 5 172 391701 3262.06 623 606 119.9
B 0 189 33793 276.8 623 606 119.9
B 0 190 31199 255.17 623 606 119.9
C 0 10 259229 1884.73 592 597 137.2
C 7 221 186226 1352.73 592 597 137.2
C 8 111 26400 188.03 592 597 137.2
D 7 223 2004157 13719.73 561 550 146.0
D 8 195 546193 3736.3 561 550 146.0
D 12 6 368877 2522.13 561 550 146.0

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