ASTROSAT CZTI

Data Quality Report

Orbit 53083

Creation date: 2025-07-21T23:38:39.651764
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_011T07_9000006488_53083cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53083cztM0_level2_quad_clean.evt
Size (bytes)1,096,652,16077,834,880
Size1.0 GB 74.2 MB
Events in quadrant A17,783,02695,334
Events in quadrant B5,955,016694,035
Events in quadrant C11,451,786419,596
Events in quadrant D4,820,989622,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578720
B0229910
C0392470
D0195320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7548679590.023847%
B75487039.313725%
C7548300839.851616%
D75482403.179650%

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 7547 7547 5889 5889 78.03% 78.03%
B 7547 7547 492 492 6.52% 6.52%
C 7548 7548 2647 2647 35.07% 35.07%
D 7548 7548 203 203 2.69% 2.69%

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 9 191 15214851 140750.46 423 412 108.1
A 3 14 399471 3691.74 423 412 108.1
A 7 206 135006 1245.14 423 412 108.1
B 2 249 1602879 10167.65 737 712 157.6
B 4 81 333088 2109.32 737 712 157.6
B 14 32 310287 1964.62 737 712 157.6
C 9 38 5504416 31812.03 628 619 173.0
C 15 224 2293447 13252.58 628 619 173.0
C 9 237 287226 1656.59 628 619 173.0
D 12 17 972366 4572.14 747 713 212.5
D 2 153 126154 590.27 747 713 212.5
D 2 120 99817 466.34 747 713 212.5

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