ASTROSAT CZTI

Data Quality Report

Orbit 50135

Creation date: 2025-01-04T20:10:48.844780
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_50135cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50135cztM0_level2_quad_clean.evt
Size (bytes)1,514,073,60048,150,720
Size1.4 GB 45.9 MB
Events in quadrant A15,599,584223,487
Events in quadrant B5,219,069690,778
Events in quadrant C16,868,47520,113
Events in quadrant D17,797,70114,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513825
B0206360
C0550900
D0577770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7302517570.870994%
B73024115.628595%
C7302712697.589701%
D7302717298.219666%

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 7302 7302 4547 4547 62.27% 62.27%
B 7302 7302 282 282 3.86% 3.86%
C 7302 7302 5717 5717 78.29% 78.29%
D 7302 7302 6275 6275 85.94% 85.94%

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 0 98 10260667 75445.94 525 511 136.0
A 6 250 905592 6655.33 525 511 136.0
A 10 253 621731 4568.01 525 511 136.0
B 2 176 862232 5609.37 720 696 153.6
B 5 185 284273 1846.34 720 696 153.6
B 1 207 187876 1218.71 720 696 153.6
C 15 197 5025719 69032.94 239 236 72.8
C 4 111 4810515 66076.77 239 236 72.8
C 15 230 880529 12092.21 239 236 72.8
D 7 61 6662235 69903.35 304 292 95.3
D 15 106 2233977 23437.92 304 292 95.3
D 15 168 2214178 23230.17 304 292 95.3

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