ASTROSAT CZTI

Data Quality Report

Orbit 53349

Creation date: 2025-08-08T19:13:21.614314
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/AS1C09_011T08_9000006492_53349cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53349cztM0_level2_quad_clean.evt
Size (bytes)982,154,88094,824,000
Size936.7 MB 90.4 MB
Events in quadrant A5,039,089758,387
Events in quadrant B5,611,245774,256
Events in quadrant C20,185,47089,097
Events in quadrant D4,890,411684,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205132
B0221582
C0654758
D0203112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81204195.160099%
B81216508.003940%
C8120735890.615764%
D81203654.495074%

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 9520 8120 241 241 2.53% 2.97%
B 9521 8121 361 361 3.79% 4.45%
C 9519 8119 7230 7230 75.95% 89.05%
D 9519 8119 223 223 2.34% 2.75%

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 15 174 1120457 5157.16 868 844 217.1
A 11 3 119726 547.59 868 844 217.1
A 0 8 79851 363.92 868 844 217.1
B 2 249 842697 4750.41 839 811 177.2
B 0 171 307846 1732.47 839 811 177.2
B 4 206 200319 1125.74 839 811 177.2
C 1 241 10787886 109567.17 353 351 98.5
C 15 178 5505754 55917.45 353 351 98.5
C 15 158 1003483 10188.64 353 351 98.5
D 2 62 401997 1685.7 835 797 238.0
D 2 249 293380 1229.33 835 797 238.0
D 3 12 145879 609.58 835 797 238.0

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