ASTROSAT CZTI

Data Quality Report

Orbit 54630

Creation date: 2025-11-02T23:22:56.799348
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_066T07_9000006522_54630cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54630cztM0_level2_quad_clean.evt
Size (bytes)402,883,200100,543,680
Size384.2 MB 95.9 MB
Events in quadrant A3,564,746656,270
Events in quadrant B3,359,719705,470
Events in quadrant C3,803,310618,420
Events in quadrant D3,662,026595,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152652
B0147312
C0159672
D0155392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67242143.182629%
B67241482.201071%
C67242433.613920%
D67231201.784917%

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 7779 6725 104 104 1.34% 1.55%
B 7779 6725 25 25 0.32% 0.37%
C 7779 6725 98 98 1.26% 1.46%
D 7778 6724 51 51 0.66% 0.76%

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 11 3 218593 1170.99 759 740 186.0
A 5 240 105940 565.46 759 740 186.0
A 5 243 100650 537.03 759 740 186.0
B 5 172 185663 1150.53 751 724 160.7
B 10 247 64321 395.65 751 724 160.7
B 7 0 39580 241.73 751 724 160.7
C 13 3 535270 2642.72 733 725 202.3
C 6 223 154795 761.7 733 725 202.3
C 1 93 107219 526.49 733 725 202.3
D 3 144 183642 876.85 744 712 208.6
D 8 160 129319 616.46 744 712 208.6
D 8 240 92836 441.58 744 712 208.6

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