ASTROSAT CZTI

Data Quality Report

Orbit 27771

Creation date: 2024-06-27T19:44:36.092126
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_024T01_9000004010_27771cztM0_level2.evt modeM0/AS1A10_024T01_9000004010_27771cztM0_level2_quad_clean.evt
Size (bytes)1,348,093,440249,600,960
Size1.3 GB 238.0 MB
Events in quadrant A8,494,8011,607,358
Events in quadrant B10,497,1141,615,731
Events in quadrant C10,141,5821,557,226
Events in quadrant D10,456,1341,517,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372730
B0428490
C0412930
D0437470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183151971.075621%
B183155703.112203%
C183144332.364311%
D183155603.057603%

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 20115 18315 2 2 0.01% 0.01%
B 20115 18315 225 225 1.12% 1.23%
C 20114 18314 76 76 0.38% 0.41%
D 20115 18315 422 422 2.10% 2.30%

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 13 254 31841 67.75 2193 2148 438.3
A 3 137 21046 43.12 2193 2148 438.3
A 0 226 18943 38.32 2193 2148 438.3
B 3 64 1519806 3716.32 2160 2107 408.4
B 0 190 126237 303.95 2160 2107 408.4
B 5 255 111401 267.62 2160 2107 408.4
C 3 233 1248001 2559.64 2088 2103 486.7
C 14 238 332130 678.02 2088 2103 486.7
C 6 112 227492 463.05 2088 2103 486.7
D 1 52 1986586 3909.74 2111 2049 507.6
D 2 250 349136 683.8 2111 2049 507.6
D 2 234 80153 153.87 2111 2049 507.6

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