ASTROSAT CZTI

Data Quality Report

Orbit 33808

Creation date: 2024-06-27T20:52:59.301330
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_091T01_9000004822_33808cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33808cztM0_level2_quad_clean.evt
Size (bytes)477,702,72075,948,480
Size455.6 MB 72.4 MB
Events in quadrant A3,118,763487,155
Events in quadrant B3,078,816497,892
Events in quadrant C2,743,279498,138
Events in quadrant D5,186,499465,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127211
B0126631
C0112751
D0188791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50122895.766161%
B50121653.292099%
C5012430.857941%
D501258611.691939%

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 6413 5012 198 198 3.09% 3.95%
B 6413 5012 95 95 1.48% 1.90%
C 6413 5012 32 32 0.50% 0.64%
D 6413 5012 512 512 7.98% 10.22%

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 15 237 909669 7892.06 564 554 115.2
A 13 6 15322 128.2 564 554 115.2
A 15 169 9917 81.28 564 554 115.2
B 5 172 536327 4900.22 569 556 109.3
B 5 255 62364 565.3 569 556 109.3
B 0 219 52730 477.19 569 556 109.3
C 15 214 175962 1339.77 562 568 130.9
C 0 207 76215 577.84 562 568 130.9
C 9 187 62473 472.87 562 568 130.9
D 8 195 1082496 8040.22 536 521 134.6
D 12 235 858477 6375.52 536 521 134.6
D 12 233 448864 3331.66 536 521 134.6

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