ASTROSAT CZTI

Data Quality Report

Orbit 20191116_A07_007T04_9000003310_level2

Creation date: 2025-12-05T22:28:52.330106
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/AS1A07_007T04_9000003310cztM0_level2.fits modeM0/AS1A07_007T04_9000003310cztM0_level2_quad_clean.evt
Size (bytes)23,595,84019,370,880
Size22.5 MB 18.5 MB
Events in quadrant A146,388111,812
Events in quadrant B139,756110,839
Events in quadrant C142,474105,262
Events in quadrant D125,55897,016

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047490
B048370
C047380
D049290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140431603648552140428250710062
B1140431603648552140428250710062
C1140431603648552140428250710062
D1140431603648552140428250710062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222430.134892%
B222460.269784%
C2224210.944245%
D222470.314748%

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 2223 2223 0 0 0.00% 0.00%
B 2223 2223 0 0 0.00% 0.00%
C 2223 2223 0 0 0.00% 0.00%
D 2223 2223 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 7 110 128 8.01 38 36 11.5
A 0 29 120 7.31 38 36 11.5
A 14 79 113 6.7 38 36 11.5
B 2 9 105 7.37 37 35 9.5
B 5 128 104 7.27 37 35 9.5
B 5 255 103 7.16 37 35 9.5
C 1 81 116 7.24 37 35 11.2
C 3 234 108 6.52 37 35 11.2
C 1 80 103 6.07 37 35 11.2
D 13 238 96 5.87 35 32 10.9
D 7 4 96 5.87 35 32 10.9
D 3 14 96 5.87 35 32 10.9

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