ASTROSAT CZTI

Data Quality Report

Orbit 32411

Creation date: 2024-06-27T20:39:55.131459
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_059T01_9000004704_32411cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32411cztM0_level2_quad_clean.evt
Size (bytes)1,020,804,48074,632,320
Size973.5 MB 71.2 MB
Events in quadrant A3,140,002610,842
Events in quadrant B6,996,620571,079
Events in quadrant C15,572,43595,464
Events in quadrant D4,790,073548,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130923
B0250382
C0505722
D0183382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186340.549628%
B618671711.590689%
C6186587294.924022%
D61862083.362431%

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 7466 6188 6 6 0.08% 0.10%
B 7466 6188 418 418 5.60% 6.76%
C 7466 6186 5195 5195 69.58% 83.98%
D 7466 6188 205 205 2.75% 3.31%

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 15 174 53099 329.49 797 784 158.8
A 13 254 12500 73.79 797 784 158.8
A 13 6 10535 61.41 797 784 158.8
B 6 159 1827433 12894.46 761 745 141.7
B 4 80 1437338 10140.81 761 745 141.7
B 5 172 609698 4298.56 761 745 141.7
C 3 233 14660677 303298.47 204 206 48.3
C 0 10 42167 868.1 204 206 48.3
C 14 238 31172 640.63 204 206 48.3
D 8 195 779976 4410.19 745 726 176.7
D 12 218 589681 3333.21 745 726 176.7
D 12 233 180290 1016.25 745 726 176.7

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