ASTROSAT CZTI

Data Quality Report

Orbit 24716

Creation date: 2024-06-27T19:09:05.989990
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/AS1T03_194T01_9000003620_24716cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24716cztM0_level2_quad_clean.evt
Size (bytes)946,244,160160,608,960
Size902.4 MB 153.2 MB
Events in quadrant A5,768,7941,029,944
Events in quadrant B6,150,4151,037,302
Events in quadrant C8,937,181971,783
Events in quadrant D6,969,829975,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252843
B0263133
C0351283
D0294143

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12294500.406702%
B12294970.789003%
C122944643.774199%
D122941501.220107%

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 13964 12296 0 0 0.00% 0.00%
B 13964 12295 16 16 0.11% 0.13%
C 13964 12295 26 26 0.19% 0.21%
D 13964 12297 88 88 0.63% 0.72%

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 13 254 18176 55.87 1492 1458 299.2
A 10 255 16865 51.49 1492 1458 299.2
A 3 137 14150 42.42 1492 1458 299.2
B 0 189 176843 612.59 1476 1433 286.3
B 0 230 75806 259.73 1476 1433 286.3
B 3 64 48330 163.78 1476 1433 286.3
C 7 247 2282218 6808.92 1423 1433 335.0
C 3 233 429624 1278.29 1423 1433 335.0
C 10 91 322601 958.79 1423 1433 335.0
D 1 52 1258745 3554.22 1452 1411 353.8
D 8 195 165307 463.3 1452 1411 353.8
D 2 234 47921 131.47 1452 1411 353.8

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