ASTROSAT CZTI

Data Quality Report

Orbit 50336

Creation date: 2025-01-17T20:43:19.950204
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/AS1C09_003T01_9000006442_50336cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50336cztM0_level2_quad_clean.evt
Size (bytes)862,145,28087,238,080
Size822.2 MB 83.2 MB
Events in quadrant A5,448,442646,742
Events in quadrant B4,668,313703,032
Events in quadrant C7,717,214542,778
Events in quadrant D13,537,033259,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210192
B0186192
C0278502
D0450535

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70183625.158165%
B70183344.759191%
C7019133218.977062%
D7018427160.857794%

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 7703 7018 203 203 2.64% 2.89%
B 7703 7018 145 145 1.88% 2.07%
C 7704 7019 1209 1209 15.69% 17.22%
D 7703 7018 4107 4107 53.32% 58.52%

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 8 248 488115 2637.13 751 735 184.8
A 3 231 483421 2611.73 751 735 184.8
A 7 206 258579 1395.15 751 735 184.8
B 10 254 454702 2862.61 744 719 158.6
B 1 238 259678 1632.88 744 719 158.6
B 10 44 173856 1091.72 744 719 158.6
C 15 127 2161699 11308.11 697 694 191.1
C 0 208 774247 4047.85 697 694 191.1
C 15 196 648900 3391.93 697 694 191.1
D 7 61 8126807 59094.33 481 465 137.5
D 11 245 677259 4921.61 481 465 137.5
D 15 154 441032 3203.78 481 465 137.5

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