ASTROSAT CZTI

Data Quality Report

Orbit 11221

Creation date: 2024-06-27T16:09:57.685368
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/AS1T01_200T01_9000001638_11221cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11221cztM0_level2_quad_clean.evt
Size (bytes)604,391,040118,353,600
Size576.4 MB 112.9 MB
Events in quadrant A7,281,472714,971
Events in quadrant B3,756,334808,094
Events in quadrant C3,075,685814,275
Events in quadrant D3,729,824772,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262622
B0157321
C0141961
D0156891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796128818.952325%
B67962032.987051%
C6796360.529723%
D67961241.824603%

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 7061 6797 888 888 12.58% 13.06%
B 7061 6797 71 71 1.01% 1.04%
C 7061 6797 4 4 0.06% 0.06%
D 7061 6797 56 56 0.79% 0.82%

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 8 5 4234346 28919.91 706 690 146.4
A 15 174 120055 815.38 706 690 146.4
A 14 238 100342 680.72 706 690 146.4
B 4 239 536083 3701.92 766 749 144.6
B 0 219 79801 546.66 766 749 144.6
B 15 204 57311 391.14 766 749 144.6
C 1 3 106468 609.96 747 750 173.3
C 4 254 54750 311.56 747 750 173.3
C 13 61 5535 27.61 747 750 173.3
D 13 152 196216 1102.22 737 714 177.4
D 8 195 168501 945.96 737 714 177.4
D 1 52 150028 841.82 737 714 177.4

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