ASTROSAT CZTI

Data Quality Report

Orbit 11901

Creation date: 2024-06-27T16:19:44.824598
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/AS1A04_130T01_9000001762_11901cztM0_level2.evt modeM0/AS1A04_130T01_9000001762_11901cztM0_level2_quad_clean.evt
Size (bytes)617,872,32094,884,480
Size589.2 MB 90.5 MB
Events in quadrant A4,534,217582,492
Events in quadrant B4,777,015570,186
Events in quadrant C3,743,289593,017
Events in quadrant D5,105,732561,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187623
B0194972
C0167662
D0205102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81421321.621223%
B81423143.856546%
C8142440.540408%
D81421611.977401%

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 9598 8145 2 2 0.02% 0.02%
B 9598 8145 130 130 1.35% 1.60%
C 9598 8145 0 0 0.00% 0.00%
D 9598 8145 51 51 0.53% 0.63%

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 14 63 398538 1996.54 977 954 199.1
A 8 15 108546 540.29 977 954 199.1
A 1 162 104299 518.96 977 954 199.1
B 4 239 780198 4164.29 967 941 187.1
B 15 204 70564 372.06 967 941 187.1
B 0 214 38986 203.31 967 941 187.1
C 13 61 6956 26.72 959 966 224.2
C 4 175 2897 8.61 959 966 224.2
C 3 202 2437 6.56 959 966 224.2
D 1 52 559936 2217.37 938 919 252.1
D 8 195 541031 2142.38 938 919 252.1
D 12 2 116448 458.25 938 919 252.1

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