ASTROSAT CZTI

Data Quality Report

Orbit 01375

Creation date: 2024-06-27T14:11:44.436025
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/AS1G04_014T02_9000000232_01375cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01375cztM0_level2_quad_clean.evt
Size (bytes)1,055,520,000104,045,760
Size1006.6 MB 99.2 MB
Events in quadrant A7,655,719676,809
Events in quadrant B8,960,569688,512
Events in quadrant C7,571,300680,547
Events in quadrant D7,344,814648,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274113
B0312372
C0271012
D0265362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6549110.167965%
B6549290.442816%
C654960.091617%
D65491922.931745%

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 7874 6550 173 173 2.20% 2.64%
B 7874 6550 535 535 6.79% 8.17%
C 7874 6550 140 140 1.78% 2.14%
D 7874 6549 327 327 4.15% 4.99%

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 15 127 125827 266.3 1943 1955 465.2
A 4 32 64957 135.44 1943 1955 465.2
A 12 243 10821 19.06 1943 1955 465.2
B 8 4 743939 1559.1 2058 2068 475.8
B 6 53 87528 179.6 2058 2068 475.8
B 12 52 87059 178.61 2058 2068 475.8
C 15 241 214856 411.34 1869 1934 517.6
C 3 111 19302 33.55 1869 1934 517.6
C 7 222 16999 29.1 1869 1934 517.6
D 13 73 622528 1142.08 1752 1813 543.5
D 9 53 98634 178.15 1752 1813 543.5
D 10 125 43747 77.16 1752 1813 543.5

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