ASTROSAT CZTI

Data Quality Report

Orbit 20170617_G07_076T03_9000001314_level2

Creation date: 2026-03-11T15:13:09.833301
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/AS1G07_076T03_9000001314cztM0_level2.fits modeM0/AS1G07_076T03_9000001314cztM0_level2_quad_clean.evt
Size (bytes)269,205,120204,595,200
Size256.7 MB 195.1 MB
Events in quadrant A1,604,6641,090,203
Events in quadrant B1,589,1841,106,604
Events in quadrant C1,608,8701,062,822
Events in quadrant D1,405,480990,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05760
C05780
D05780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0674760
B0585640
C0590070
D0594850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282536682.364351%
B282993401.201456%
C282711790.633158%
D282942100.742207%

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 33720 28563 0 0 0.00% 0.00%
B 33720 28578 0 0 0.00% 0.00%
C 33720 28573 0 0 0.00% 0.00%
D 33720 28567 0 0 0.00% 0.00%

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 29 1531 10.67 417 389 107.0
A 7 110 1384 9.3 417 389 107.0
A 9 19 1218 7.75 417 389 107.0
B 2 9 1368 11.32 418 397 85.8
B 12 226 1115 8.37 418 397 85.8
B 5 225 1050 7.61 418 397 85.8
C 1 80 1165 6.81 425 395 113.1
C 1 81 1119 6.4 425 395 113.1
C 2 191 1106 6.28 425 395 113.1
D 3 14 1051 6.32 399 361 109.2
D 7 5 1016 6.0 399 361 109.2
D 6 231 994 5.8 399 361 109.2

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