ASTROSAT CZTI

Data Quality Report

Orbit 53843

Creation date: 2025-09-11T02:51:13.294482
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/AS1A14_057T04_9000006508_53843cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53843cztM0_level2_quad_clean.evt
Size (bytes)2,686,248,000259,312,320
Size2.5 GB 247.3 MB
Events in quadrant A16,503,9871,901,043
Events in quadrant B13,540,7782,139,362
Events in quadrant C33,772,4691,125,249
Events in quadrant D33,945,2651,185,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06392110
B0552173
C01153344
D011594029

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04420
B04420
C04420
D04420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2175317347.971314%
B217555862.693634%
C21754879840.443137%
D21751737533.906487%

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 22339 21754 1208 1208 5.41% 5.55%
B 22340 21756 213 213 0.95% 0.98%
C 22340 21756 8430 8430 37.74% 38.75%
D 22339 21753 7566 7566 33.87% 34.78%

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 4 249 3274365 5804.93 2267 2211 563.7
A 8 249 2782311 4932.0 2267 2211 563.7
A 0 8 661807 1170.15 2267 2211 563.7
B 5 172 1487780 3017.53 2304 2222 492.3
B 7 0 635863 1287.08 2304 2222 492.3
B 5 185 592292 1198.58 2304 2222 492.3
C 1 241 15398551 31546.4 1783 1770 488.1
C 15 224 4445812 9105.38 1783 1770 488.1
C 15 158 1525224 3121.4 1783 1770 488.1
D 15 93 16527992 29559.24 1953 1865 559.1
D 10 172 4942138 8836.35 1953 1865 559.1
D 2 172 1656277 2959.14 1953 1865 559.1

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