ASTROSAT CZTI

Data Quality Report

Orbit 50381

Creation date: 2025-01-21T08:13:06.547815
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_50381cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50381cztM0_level2_quad_clean.evt
Size (bytes)831,876,48097,868,160
Size793.3 MB 93.3 MB
Events in quadrant A4,982,939698,151
Events in quadrant B4,421,049755,329
Events in quadrant C9,960,650529,280
Events in quadrant D10,846,529456,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198790
B0183860
C0348592
D0374840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75311361.805869%
B75322002.655337%
C7531185524.631523%
D7531227530.208472%

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 7531 7531 102 102 1.35% 1.35%
B 7532 7532 133 133 1.77% 1.77%
C 7531 7531 1703 1703 22.61% 22.61%
D 7531 7531 2189 2189 29.07% 29.07%

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 3 14 516728 2625.09 805 788 196.5
A 4 3 352199 1787.97 805 788 196.5
A 3 63 183745 930.88 805 788 196.5
B 5 172 156336 924.99 797 771 168.2
B 5 185 147728 873.8 797 771 168.2
B 0 213 120394 711.28 797 771 168.2
C 15 127 2371829 12203.05 709 705 194.3
C 15 199 695279 3574.64 709 705 194.3
C 15 195 639083 3285.43 709 705 194.3
D 7 61 2849463 14896.18 692 670 191.2
D 7 60 638319 3334.23 692 670 191.2
D 15 169 626530 3272.59 692 670 191.2

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