ASTROSAT CZTI

Data Quality Report

Orbit 34238

Creation date: 2022-07-18T13:29:18.410323
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/AS1A11_059T09_9000004888_34238cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34238cztM0_level2_quad_clean.evt
Size (bytes)1,035,587,520127,779,840
Size987.6 MB 121.9 MB
Events in quadrant A11,505,215738,323
Events in quadrant B6,048,197834,440
Events in quadrant C5,974,250816,066
Events in quadrant D7,146,693772,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410350
B0247680
C0240500
D0284530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10214189418.543176%
B102143963.877032%
C102142682.623850%
D102142962.897983%

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 13469 10216 1606 1606 11.92% 15.72%
B 13469 10216 264 264 1.96% 2.58%
C 13469 10216 235 235 1.74% 2.30%
D 13469 10216 239 239 1.77% 2.34%

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 15 169 7121591 32831.79 1090 1069 216.9
A 9 143 126858 580.0 1090 1069 216.9
A 10 83 25448 112.41 1090 1069 216.9
B 5 172 1325832 6101.29 1145 1116 217.1
B 0 190 66347 300.43 1145 1116 217.1
B 5 255 49564 223.14 1145 1116 217.1
C 14 254 508921 1980.42 1110 1120 256.4
C 0 10 491621 1912.95 1110 1120 256.4
C 15 214 436972 1699.82 1110 1120 256.4
D 8 195 1400788 5193.85 1114 1082 269.5
D 7 80 827778 3067.6 1114 1082 269.5
D 7 223 187291 690.96 1114 1082 269.5

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