ASTROSAT CZTI

Data Quality Report

Orbit 20210305_A10_101T19_9000004228_level2

Creation date: 2025-12-22T14:22:02.491663
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/AS1A10_101T19_9000004228cztM0_level2.fits modeM0/AS1A10_101T19_9000004228cztM0_level2_quad_clean.evt
Size (bytes)448,447,680449,579,520
Size427.7 MB 428.8 MB
Events in quadrant A2,847,4222,855,759
Events in quadrant B2,752,9522,919,187
Events in quadrant C2,776,1212,801,429
Events in quadrant D1,894,9881,740,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09800
B09800
C09830
D09800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01143730
B01028680
C01149640
D02933760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4805414232.961252%
B480447571.575639%
C4804417083.555075%
D480462315748.197561%

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 53624 48106 0 0 0.00% 0.00%
B 53624 48099 0 0 0.00% 0.00%
C 53623 48091 0 0 0.00% 0.00%
D 53623 48030 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 2773 11.27 741 692 184.6
A 7 110 2210 8.22 741 692 184.6
A 0 30 2104 7.65 741 692 184.6
B 2 9 2234 10.48 727 690 147.3
B 2 8 1831 7.75 727 690 147.3
B 5 128 1813 7.62 727 690 147.3
C 1 81 2208 8.07 732 682 189.1
C 1 80 2138 7.7 732 682 189.1
C 9 209 1939 6.65 732 682 189.1
D 15 46 1476 6.68 541 492 147.3
D 10 189 1390 6.1 541 492 147.3
D 6 67 1381 6.04 541 492 147.3

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