ASTROSAT CZTI

Data Quality Report

Orbit 37854

Creation date: 2024-06-27T21:45:20.208865
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/AS1C07_001T12_9000005352_37854cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37854cztM0_level2_quad_clean.evt
Size (bytes)485,864,64090,025,920
Size463.4 MB 85.9 MB
Events in quadrant A2,812,826631,011
Events in quadrant B3,043,076624,257
Events in quadrant C2,661,445593,492
Events in quadrant D5,861,204529,811

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112843
B0120782
C0106402
D0207552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4957230.463990%
B49571302.622554%
C4957370.746419%
D4957101720.516441%

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 7080 4958 12 12 0.17% 0.24%
B 7080 4958 111 111 1.57% 2.24%
C 7080 4958 35 35 0.49% 0.71%
D 7080 4958 915 915 12.92% 18.46%

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 338061 2812.08 602 593 120.0
A 12 16 58920 486.03 602 593 120.0
A 9 143 45051 370.46 602 593 120.0
B 5 172 420565 3893.56 581 569 107.9
B 0 213 117862 1087.36 581 569 107.9
B 0 229 89960 828.7 581 569 107.9
C 15 214 223646 1716.59 568 572 130.0
C 0 10 153510 1176.89 568 572 130.0
C 14 254 29052 219.16 568 572 130.0
D 1 52 1319395 9832.61 547 531 134.1
D 13 249 1055433 7864.68 547 531 134.1
D 12 233 546522 4070.56 547 531 134.1

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