ASTROSAT CZTI

Data Quality Report

Orbit 30754

Creation date: 2024-06-27T20:19:11.960049
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_053T25_9000004440_30754cztM0_level2.evt modeM0/AS1A10_053T25_9000004440_30754cztM0_level2_quad_clean.evt
Size (bytes)820,310,400101,963,520
Size782.3 MB 97.2 MB
Events in quadrant A4,716,041646,907
Events in quadrant B7,385,316634,880
Events in quadrant C4,594,271616,410
Events in quadrant D7,566,277590,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195472
B0278322
C0191022
D0286252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86291591.842624%
B86292963.430293%
C86292052.375710%
D86293534.090856%

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 9939 8629 69 69 0.69% 0.80%
B 9939 8629 93 93 0.94% 1.08%
C 9939 8629 6 6 0.06% 0.07%
D 9939 8629 279 279 2.81% 3.23%

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 13 522162 2386.4 1085 1058 218.4
A 13 254 16679 71.54 1085 1058 218.4
A 3 137 11111 46.04 1085 1058 218.4
B 6 159 2502488 12159.86 1065 1038 205.7
B 5 255 447148 2168.6 1065 1038 205.7
B 0 190 113522 546.8 1065 1038 205.7
C 3 233 288473 1178.97 1031 1037 243.8
C 14 238 168801 688.11 1031 1037 243.8
C 0 10 65693 265.2 1031 1037 243.8
D 8 195 2754451 10878.09 1038 1008 253.1
D 13 249 494483 1949.58 1038 1008 253.1
D 12 218 174514 685.47 1038 1008 253.1

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