ASTROSAT CZTI

Data Quality Report

Orbit 39042

Creation date: 2024-06-27T21:59:39.839580
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_077T06_9000005430_39042cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39042cztM0_level2_quad_clean.evt
Size (bytes)451,782,72086,469,120
Size430.9 MB 82.5 MB
Events in quadrant A8,548,770381,034
Events in quadrant B2,424,984668,415
Events in quadrant C2,549,655636,371
Events in quadrant D2,816,880587,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287243
B0101552
C0104532
D0115652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4921231647.063605%
B492160.121926%
C492180.162569%
D4921440.894127%

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 7073 4922 2238 2238 31.64% 45.47%
B 7073 4922 1 1 0.01% 0.02%
C 7073 4922 3 3 0.04% 0.06%
D 7073 4922 41 41 0.58% 0.83%

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 15 222 6180435 62207.6 496 489 99.3
A 10 83 306107 3076.36 496 489 99.3
A 12 16 69562 695.29 496 489 99.3
B 0 190 45184 393.36 597 582 113.4
B 15 85 22262 191.2 597 582 113.4
B 12 111 13461 113.58 597 582 113.4
C 15 214 207465 1513.3 592 598 136.7
C 0 10 15599 109.74 592 598 136.7
C 12 175 5715 37.43 592 598 136.7
D 1 47 162081 1122.11 588 571 143.9
D 12 233 112150 775.21 588 571 143.9
D 2 249 103407 714.46 588 571 143.9

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