ASTROSAT CZTI

Data Quality Report

Orbit 42683

Creation date: 2024-06-27T22:43:00.995721
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/AS1A05_013T01_9000005822_42683cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42683cztM0_level2_quad_clean.evt
Size (bytes)386,778,24097,842,240
Size368.9 MB 93.3 MB
Events in quadrant A3,427,744658,325
Events in quadrant B2,979,015668,083
Events in quadrant C3,095,401643,722
Events in quadrant D4,344,748570,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136472
B0129072
C0130712
D0171242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6042881.456471%
B6043400.661923%
C6043370.612279%
D60434026.652325%

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 7326 6043 67 67 0.91% 1.11%
B 7327 6044 29 29 0.40% 0.48%
C 7327 6044 33 33 0.45% 0.55%
D 7327 6044 327 327 4.46% 5.41%

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 651670 4786.69 660 646 136.0
A 13 248 192421 1410.04 660 646 136.0
A 15 223 13287 92.94 660 646 136.0
B 0 245 161921 1279.4 651 633 126.1
B 4 141 89292 703.28 651 633 126.1
B 10 246 42509 332.18 651 633 126.1
C 14 254 252728 1682.68 639 644 149.8
C 15 214 252224 1679.32 639 644 149.8
C 3 233 47209 310.83 639 644 149.8
D 2 249 653187 4235.72 625 605 154.1
D 1 52 557134 3612.27 625 605 154.1
D 1 47 496074 3215.94 625 605 154.1

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