ASTROSAT CZTI

Data Quality Report

Orbit 50578

Creation date: 2025-02-03T03:14:48.187597
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/AS1T05_239T01_9000006444_50578cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50578cztM0_level2_quad_clean.evt
Size (bytes)697,973,76083,995,200
Size665.6 MB 80.1 MB
Events in quadrant A4,052,256594,883
Events in quadrant B10,398,480424,154
Events in quadrant C6,273,102532,160
Events in quadrant D4,616,320544,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165092
B0353465
C0229922
D0182342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64132924.553251%
B6412274642.825951%
C641383413.004834%
D64132373.695618%

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 7533 6414 259 259 3.44% 4.04%
B 7532 6413 2285 2285 30.34% 35.63%
C 7533 6414 740 740 9.82% 11.54%
D 7533 6414 206 206 2.73% 3.21%

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 4 249 854208 5246.23 662 646 162.7
A 8 38 176747 1082.37 662 646 162.7
A 4 3 164268 1005.67 662 646 162.7
B 5 172 3765406 31531.39 559 540 119.4
B 4 170 2538356 21254.64 559 540 119.4
B 7 0 789947 6611.42 559 540 119.4
C 15 196 1280773 7293.27 636 632 175.5
C 0 177 388010 2206.98 636 632 175.5
C 13 3 385138 2190.62 636 632 175.5
D 6 42 495959 2719.9 653 631 182.1
D 8 246 339202 1859.13 653 631 182.1
D 2 249 280926 1539.13 653 631 182.1

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