ASTROSAT CZTI

Data Quality Report

Orbit 36260

Creation date: 2022-06-13T14:57:56.157521
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/AS1A10_071T36_9000005182_36260cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36260cztM0_level2_quad_clean.evt
Size (bytes)454,841,28065,963,520
Size433.8 MB 62.9 MB
Events in quadrant A2,639,589424,004
Events in quadrant B4,193,939408,121
Events in quadrant C2,879,005417,608
Events in quadrant D3,716,575390,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109023
B0157572
C0114012
D0142802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5095150.294406%
B50953877.595682%
C5095951.864573%
D50952755.397448%

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 7098 5096 4 4 0.06% 0.08%
B 7098 5096 298 298 4.20% 5.85%
C 7098 5096 86 86 1.21% 1.69%
D 7098 5096 269 269 3.79% 5.28%

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 179199 1409.58 628 617 126.7
A 9 143 25800 198.77 628 617 126.7
A 13 254 8868 65.13 628 617 126.7
B 5 236 621254 5410.33 614 600 114.7
B 5 172 416446 3624.99 614 600 114.7
B 15 35 409334 3563.0 614 600 114.7
C 0 10 277534 1953.8 612 617 141.7
C 15 214 213119 1499.32 612 617 141.7
C 13 61 4028 24.07 612 617 141.7
D 12 6 913402 6317.33 594 579 144.5
D 13 171 128722 886.83 594 579 144.5
D 2 153 74603 512.29 594 579 144.5

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