ASTROSAT CZTI

Data Quality Report

Orbit 53048

Creation date: 2025-07-19T11:35:00.384348
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_53048cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53048cztM0_level2_quad_clean.evt
Size (bytes)660,674,88082,019,520
Size630.1 MB 78.2 MB
Events in quadrant A7,284,279504,829
Events in quadrant B3,705,600616,982
Events in quadrant C7,495,448450,615
Events in quadrant D5,503,028488,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258191
B0151221
C0264851
D0205203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6045111718.478081%
B60461863.076414%
C6046141123.337744%
D60455629.296940%

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 7205 6046 1064 1064 14.77% 17.60%
B 7206 6047 124 124 1.72% 2.05%
C 7206 6047 1343 1343 18.64% 22.21%
D 7205 6046 617 617 8.56% 10.21%

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 3403219 23313.04 586 573 146.0
A 7 206 1221839 8367.44 586 573 146.0
A 15 174 148251 1011.81 586 573 146.0
B 1 255 583563 4471.84 610 588 130.4
B 10 63 141784 1083.08 610 588 130.4
B 4 81 119140 909.38 610 588 130.4
C 15 224 2531658 16870.45 540 534 150.0
C 1 241 1276623 8505.39 540 534 150.0
C 13 3 528060 3516.07 540 534 150.0
D 8 176 1134515 6855.53 574 548 165.4
D 15 78 706661 4268.89 574 548 165.4
D 3 224 666435 4025.7 574 548 165.4

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