ASTROSAT CZTI

Data Quality Report

Orbit 54274

Creation date: 2025-10-10T00:37:03.383868
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/AS1A14_126T15_9000006516_54274cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54274cztM0_level2_quad_clean.evt
Size (bytes)514,598,40092,626,560
Size490.8 MB 88.3 MB
Events in quadrant A3,187,262638,660
Events in quadrant B4,297,462651,685
Events in quadrant C3,792,585575,059
Events in quadrant D7,247,613469,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01439682
B017383102
C016718400
D026314160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6750150.222222%
B67502994.429630%
C67192774.122637%
D6735120217.847068%

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 6794 6781 15 15 0.22% 0.22%
B 6794 6786 254 254 3.74% 3.74%
C 6793 6752 237 237 3.49% 3.51%
D 6792 6775 1253 1253 18.45% 18.49%

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 4 5 152165 876.94 699 683 172.7
A 11 3 54549 311.83 699 683 172.7
A 8 6 42494 242.05 699 683 172.7
B 5 185 507827 3448.97 680 654 147.1
B 5 236 318939 2164.46 680 654 147.1
B 7 0 265887 1803.69 680 654 147.1
C 1 29 380312 2099.54 662 655 180.8
C 12 249 258039 1423.36 662 655 180.8
C 15 189 115816 636.85 662 655 180.8
D 3 12 3945664 22435.22 617 589 175.8
D 8 176 433573 2462.33 617 589 175.8
D 2 153 111236 629.24 617 589 175.8

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