ASTROSAT CZTI

Data Quality Report

Orbit 54215

Creation date: 2025-10-06T01:20:52.065750
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_004T08_9000006514_54215cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54215cztM0_level2_quad_clean.evt
Size (bytes)726,779,52089,994,240
Size693.1 MB 85.8 MB
Events in quadrant A3,789,610674,791
Events in quadrant B4,583,263704,289
Events in quadrant C3,847,557632,282
Events in quadrant D14,124,501213,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165560
B0189330
C0169110
D0470100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71801391.935933%
B71814275.946247%
C71811592.214176%
D7181477666.508843%

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 7180 7180 123 123 1.71% 1.71%
B 7181 7181 315 315 4.39% 4.39%
C 7181 7181 158 158 2.20% 2.20%
D 7180 7180 4564 4564 63.57% 63.57%

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 7 29 474442 2538.45 753 734 186.6
A 4 5 108618 578.11 753 734 186.6
A 15 174 78911 418.92 753 734 186.6
B 8 234 1192433 7664.51 735 709 155.5
B 5 236 109354 698.74 735 709 155.5
B 0 213 79283 505.34 735 709 155.5
C 1 241 558471 2766.6 735 727 201.6
C 15 215 87059 428.24 735 727 201.6
C 12 252 78737 386.96 735 727 201.6
D 8 176 11360071 97173.41 407 388 116.9
D 11 176 687376 5876.66 407 388 116.9
D 3 12 154726 1320.24 407 388 116.9

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