ASTROSAT CZTI

Data Quality Report

Orbit 39605

Creation date: 2024-06-27T22:06:41.979369
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/AS1A12_018T01_9000005488_39605cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39605cztM0_level2_quad_clean.evt
Size (bytes)401,935,68097,839,360
Size383.3 MB 93.3 MB
Events in quadrant A3,231,575676,248
Events in quadrant B3,059,428685,650
Events in quadrant C4,681,100642,658
Events in quadrant D3,500,303592,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130003
B0125282
C0174612
D0140872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5223440.842428%
B52231242.374114%
C52232955.648095%
D52232544.863105%

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 7226 5224 29 29 0.40% 0.56%
B 7226 5224 78 78 1.08% 1.49%
C 7226 5224 291 291 4.03% 5.57%
D 7226 5224 203 203 2.81% 3.89%

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 458445 3707.04 615 605 123.5
A 15 222 206907 1670.39 615 605 123.5
A 6 10 155123 1251.1 615 605 123.5
B 5 255 336953 2960.15 608 592 113.6
B 5 172 286800 2518.77 608 592 113.6
B 4 170 20327 173.68 608 592 113.6
C 9 187 1863789 13482.69 603 607 138.2
C 15 214 229881 1659.11 603 607 138.2
C 15 208 189195 1364.69 603 607 138.2
D 13 249 477522 3278.12 599 583 145.5
D 12 227 190149 1302.93 599 583 145.5
D 12 233 149242 1021.77 599 583 145.5

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