ASTROSAT CZTI

Data Quality Report

Orbit 20751

Creation date: 2024-06-27T18:19:11.034085
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_9000003070_20751cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20751cztM0_level2_quad_clean.evt
Size (bytes)259,522,56037,929,600
Size247.5 MB 36.2 MB
Events in quadrant A1,622,796237,619
Events in quadrant B1,662,429238,396
Events in quadrant C1,668,221229,459
Events in quadrant D2,683,083210,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0737
B07711
C07810
D0735

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07593749
B07684750
C07632793
D0118311670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111
B0100
C0111
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3278240.732154%
B3275421.282443%
C3266411.255358%
D32362447.540173%

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 5705 3325 2 2 0.04% 0.06%
B 5699 3314 6 6 0.11% 0.18%
C 5703 3305 0 0 0.00% 0.00%
D 5697 3286 193 193 3.39% 5.87%

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 5 16 41454 489.44 411 402 83.9
A 0 226 3513 37.08 411 402 83.9
A 3 137 3413 35.89 411 402 83.9
B 7 220 36449 450.81 409 398 80.0
B 0 183 13819 167.83 409 398 80.0
B 12 111 9456 113.27 409 398 80.0
C 14 238 61471 656.6 395 396 93.0
C 3 233 52290 557.9 395 396 93.0
C 7 247 6014 60.4 395 396 93.0
D 1 52 970995 10243.91 384 374 94.8
D 1 20 173639 1828.63 384 374 94.8
D 5 222 41684 435.98 384 374 94.8

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