ASTROSAT CZTI

Data Quality Report

Orbit 20190511_T03_005T01_9000002908_level2

Creation date: 2025-11-30T03:55:31.388292
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/AS1T03_005T01_9000002908cztM0_level2.fits modeM0/AS1T03_005T01_9000002908cztM0_level2_quad_clean.evt
Size (bytes)727,833,600669,150,720
Size694.1 MB 638.2 MB
Events in quadrant A4,561,7164,135,019
Events in quadrant B4,388,0264,137,881
Events in quadrant C4,379,6623,852,401
Events in quadrant D3,562,6702,992,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015300
B015300
C015300
D015300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01567690
B01581970
C01589060
D02496990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7504410711.427163%
B7504412421.655029%
C7504413441.790949%
D75044933612.440701%

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 86614 75030 0 0 0.00% 0.00%
B 86614 75034 0 0 0.00% 0.00%
C 86614 75040 0 0 0.00% 0.00%
D 86614 74575 0 0 0.00% 0.00%

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 0 29 4421 11.6 1186 1118 284.7
A 7 110 3745 9.23 1186 1118 284.7
A 9 19 3507 8.39 1186 1118 284.7
B 2 9 3540 10.79 1156 1100 226.1
B 2 8 2975 8.29 1156 1100 226.1
B 3 17 2926 8.08 1156 1100 226.1
C 1 80 3268 7.41 1156 1076 295.7
C 1 81 3191 7.15 1156 1076 295.7
C 12 241 3095 6.83 1156 1076 295.7
D 7 3 2537 6.04 1017 928 266.4
D 6 38 2490 5.86 1017 928 266.4
D 10 189 2476 5.81 1017 928 266.4

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